diff --git a/crates/utopia-server/src/extraction.rs b/crates/utopia-server/src/extraction.rs
index 26e624df..a739a6ea 100644
--- a/crates/utopia-server/src/extraction.rs
+++ b/crates/utopia-server/src/extraction.rs
@@ -1446,8 +1446,12 @@ async fn run(state: &AppState, document_id: Uuid, proposer: Proposer) -> anyhow:
                 }
             }
 
-            // 主宾未在 entities 中声明时先建出来（模型偶尔漏报）。没有 entities 那条
-            // 记录就没有类型可依，留空即可——0009 之前这里只能塞 concept
+            // 主宾没在 entities 里声明时（模型偶尔漏报）：库里已经有这个名字的就用它，
+            // 库里也没有的**不建**（#559）。从前这里一律先建出来、类型留空，结果
+            // 一个库里 20% 的实体是 "lawsuit against OpenAI"、"$5 billion"、"March 2024"
+            // 这样的描述——几乎全部只当过宾语，从没当过主语。漏报的实体多半在
+            // 前面的分块或别的文档里已经声明过，按名字找得到；找不到的就是描述。
+            // 描述做主语的事实丢掉并记账，做宾语的事实照落，宾语落成字面值
             let subject_id = match f.subject_ref.as_deref().map(str::trim) {
                 Some(handle) => match referenced_entity(&ref_entities, handle) {
                     Some(bound) => bound.id,
@@ -1465,7 +1469,29 @@ async fn run(state: &AppState, document_id: Uuid, proposer: Proposer) -> anyhow:
                     }
                 },
                 None => {
-                    match no_ref_name_binding(&entity_ids, &handled_by_name, f.subject.trim()) {
+                    let binding =
+                        no_ref_name_binding(&entity_ids, &handled_by_name, f.subject.trim());
+                    if matches!(binding, NoRefNameBinding::Missing)
+                        && utopia_store::resolution::existing_by_name(
+                            &state.pool,
+                            doc.kb_id,
+                            f.subject.trim(),
+                        )
+                        .await?
+                        .is_none()
+                    {
+                        drop_signal(
+                            state,
+                            doc.kb_id,
+                            document_id,
+                            utopia_store::extraction_drops::reason::SUBJECT_NOT_DECLARED,
+                            &f.predicate,
+                            Some(f.subject.trim()),
+                        )
+                        .await;
+                        continue;
+                    }
+                    match binding {
                         NoRefNameBinding::Legacy(id) => id,
                         NoRefNameBinding::AmbiguousHandled | NoRefNameBinding::Missing => {
                             touched_names.insert(
@@ -1506,28 +1532,117 @@ async fn run(state: &AppState, document_id: Uuid, proposer: Proposer) -> anyhow:
                         continue;
                     }
                 },
-                None => match no_ref_name_binding(&entity_ids, &handled_by_name, object_name) {
-                    NoRefNameBinding::Legacy(id) => id,
-                    NoRefNameBinding::AmbiguousHandled | NoRefNameBinding::Missing => {
-                        touched_names.insert(
-                            utopia_store::resolution::normalize_name(object_name).to_lowercase(),
-                        );
-                        resolve_bare(
+                None => {
+                    let binding = no_ref_name_binding(&entity_ids, &handled_by_name, object_name);
+                    if matches!(binding, NoRefNameBinding::Missing)
+                        && utopia_store::resolution::existing_by_name(
                             &state.pool,
                             doc.kb_id,
-                            None,
                             object_name,
-                            ctx,
-                            Some(&chunk.text),
-                            &mut doc_cache,
-                            &handled_by_name,
-                            &mut ambiguous_bare_cache,
-                            &mut needs_adjudication,
-                            &mut human_reviews_found,
                         )
                         .await?
+                        .is_none()
+                    {
+                        // 没声明、库里也没有：宾语落成字面值。谓词照旧对本体；
+                        // 被动形（`_by`）本该主宾对调，而字面值当不了主语，那条就不给谓词，
+                        // 原词留在证据上
+                        let predicate_id = match pred_index.lookup(f.predicate.as_str()) {
+                            Some((id, false)) => Some(id),
+                            Some((_, true)) => None,
+                            None => {
+                                let _ = utopia_store::ontology::record_miss(
+                                    &state.pool,
+                                    doc.kb_id,
+                                    "relation_type",
+                                    &f.predicate,
+                                    Some(&format!("{} → {}", f.subject, object_name)),
+                                )
+                                .await;
+                                None
+                            }
+                        };
+                        drop_signal(
+                            state,
+                            doc.kb_id,
+                            document_id,
+                            utopia_store::extraction_drops::reason::OBJECT_UNDECLARED,
+                            &f.predicate,
+                            Some(object_name),
+                        )
+                        .await;
+                        let literal = serde_json::json!({ "value": object_name });
+                        if await_nod {
+                            if let utopia_store::pending::Outcome::Proposed(_) =
+                                utopia_store::pending::propose(
+                                    &state.pool,
+                                    utopia_store::pending::Proposal {
+                                        kb_id: doc.kb_id,
+                                        subject_id,
+                                        predicate_id,
+                                        object_id: None,
+                                        object_value: Some(&literal),
+                                        proposed_predicate: Some(f.predicate.as_str()),
+                                        validity,
+                                        confidence,
+                                        chunk_id: chunk.id,
+                                        proposed_by: proposer.user_id,
+                                        proposed_token: proposer.token_id,
+                                    },
+                                )
+                                .await?
+                            {
+                                pending_count += 1;
+                            }
+                            continue;
+                        }
+                        let (fact_id, created) = utopia_store::graph::insert_value_fact(
+                            &state.pool,
+                            doc.kb_id,
+                            subject_id,
+                            predicate_id,
+                            &literal,
+                            validity,
+                            confidence,
+                        )
+                        .await?;
+                        touched_facts.push(fact_id);
+                        utopia_store::graph::add_evidence(
+                            &state.pool,
+                            fact_id,
+                            chunk.id,
+                            f.quote.as_deref(),
+                            Some(f.predicate.as_str()),
+                        )
+                        .await?;
+                        if created {
+                            fact_count += 1;
+                        }
+                        continue;
                     }
-                },
+                    match binding {
+                        NoRefNameBinding::Legacy(id) => id,
+                        NoRefNameBinding::AmbiguousHandled | NoRefNameBinding::Missing => {
+                            touched_names.insert(
+                                utopia_store::resolution::normalize_name(object_name)
+                                    .to_lowercase(),
+                            );
+                            resolve_bare(
+                                &state.pool,
+                                doc.kb_id,
+                                None,
+                                object_name,
+                                ctx,
+                                Some(&chunk.text),
+                                &mut doc_cache,
+                                &handled_by_name,
+                                &mut ambiguous_bare_cache,
+                                &mut needs_adjudication,
+                                &mut human_reviews_found,
+                            )
+                            .await?
+                        }
+                    }
+                }
             };
             if subject_id == object_id {
                 continue;
diff --git a/crates/utopia-store/src/extraction_drops.rs b/crates/utopia-store/src/extraction_drops.rs
index ce6c2a33..770d20c1 100644
--- a/crates/utopia-store/src/extraction_drops.rs
+++ b/crates/utopia-store/src/extraction_drops.rs
@@ -42,6 +42,10 @@ pub mod reason {
     /// 守卫放行了、结构却像从句（限定词起头的长串、句中的关系词）。**只记不挡**：
     /// 实体照常落库，例句留下来——#193 要的是一份跨语料的标注集，再决定哪条升成硬规则
     pub const CLAUSE_SUSPECT: &str = "clause_suspect";
+    /// 宾语既没在 entities 里声明、库里也没有叫这个名字的东西：事实照落，
+    /// 宾语落成字面值而不是节点（#559）。记下来是为了量：这一类里有多少
+    /// 本该是实体（模型漏报），有多少本来就是描述
+    pub const OBJECT_UNDECLARED: &str = "object_undeclared";
 }
 
 pub async fn record(
diff --git a/crates/utopia-store/src/resolution.rs b/crates/utopia-store/src/resolution.rs
index f29ad63a..4d86bd41 100644
--- a/crates/utopia-store/src/resolution.rs
+++ b/crates/utopia-store/src/resolution.rs
@@ -1001,6 +1001,35 @@ async fn update_profile(pool: &PgPool, id: Uuid, n: i32, ctx: &[f32]) -> AppResu
 ///
 /// 没有谓词的事实（`predicate_id IS NULL`，0010）不参与：原话留在证据里，
 /// 不是本体承认的说法，不该被当成一个人的身份写进后缀。
+/// 库里有没有叫这个名字的实体，**不问类型**、并掉的不算。
+///
+/// 抽取用它判断一个没声明的主宾是不是已知的东西（#559）：模型偶尔漏报一个实体
+/// 却在事实里用了它，那时库里多半已经有它；库里也没有的，就不是漏报，是一个
+/// 描述（"lawsuit against OpenAI"），不该成节点。同名多个时取事实最多的那个——
+/// 这里只回答「有没有」，谁是谁交给消解
+pub async fn existing_by_name(
+    pool: &PgPool,
+    kb_id: Uuid,
+    raw_name: &str,
+) -> AppResult<Option<Uuid>> {
+    let name = normalize_name(raw_name);
+    let keys = recall_keys(&name);
+    let id: Option<Uuid> = sqlx::query_scalar(
+        "SELECT e.id FROM entities e
+          WHERE e.kb_id = $1 AND e.merged_into IS NULL
+            AND (lower(e.canonical_name) = ANY($2)
+                 OR EXISTS (SELECT 1 FROM unnest(e.aliases) a WHERE lower(a) = ANY($2)))
+          ORDER BY (SELECT count(*) FROM facts f
+                     WHERE f.subject_id = e.id OR f.object_id = e.id) DESC, e.created_at
+          LIMIT 1",
+    )
+    .bind(kb_id)
+    .bind(&keys)
+    .fetch_optional(pool)
+    .await?;
+    Ok(id)
+}
+
 pub async fn refresh_disambiguators(pool: &PgPool, kb_id: Uuid, name: &str) -> AppResult<()> {
     let group: Vec<(Uuid,)> = sqlx::query_as(
         "SELECT id FROM entities
diff --git a/crates/utopia-store/tests/an_undeclared_name_is_looked_up.rs b/crates/utopia-store/tests/an_undeclared_name_is_looked_up.rs
new file mode 100644
index 00000000..21d0f864
--- /dev/null
+++ b/crates/utopia-store/tests/an_undeclared_name_is_looked_up.rs
@@ -0,0 +1,104 @@
+//! `existing_by_name`（#559）：一个没声明的主宾是不是库里已经有的东西。
+//! 不问类型，认别名，并掉的不算；没有就是没有。
+
+use sqlx::PgPool;
+use uuid::Uuid;
+
+struct Fixture {
+    org: Uuid,
+    kb: Uuid,
+    acme: Uuid,
+    merged: Uuid,
+}
+
+async fn seed(pool: &PgPool) -> anyhow::Result<Fixture> {
+    let (org, ws, kb) = (Uuid::now_v7(), Uuid::now_v7(), Uuid::now_v7());
+    let (organization, acme, merged) = (Uuid::now_v7(), Uuid::now_v7(), Uuid::now_v7());
+    sqlx::query("INSERT INTO organizations (id, name) VALUES ($1, 'lookup-test')")
+        .bind(org)
+        .execute(pool)
+        .await?;
+    sqlx::query("INSERT INTO workspaces (id, org_id, name) VALUES ($1, $2, 'lookup-test')")
+        .bind(ws)
+        .bind(org)
+        .execute(pool)
+        .await?;
+    sqlx::query(
+        "INSERT INTO knowledge_bases (id, workspace_id, name) VALUES ($1, $2, 'lookup-test')",
+    )
+    .bind(kb)
+    .bind(ws)
+    .execute(pool)
+    .await?;
+    sqlx::query("INSERT INTO entity_types (id, kb_id, key, label) VALUES ($1, $2, 'organization', 'Organization')")
+        .bind(organization)
+        .bind(kb)
+        .execute(pool)
+        .await?;
+    // 有类型的、带别名的一个；并掉的一个（同名，不该被找到）
+    sqlx::query(
+        "INSERT INTO entities (id, kb_id, type_id, canonical_name, aliases)
+         VALUES ($1, $2, $3, 'Acme Corporation', ARRAY['ACME'])",
+    )
+    .bind(acme)
+    .bind(kb)
+    .bind(organization)
+    .execute(pool)
+    .await?;
+    sqlx::query(
+        "INSERT INTO entities (id, kb_id, canonical_name, merged_into) VALUES ($1, $2, 'Nova Labs', $3)",
+    )
+    .bind(merged)
+    .bind(kb)
+    .bind(acme)
+    .execute(pool)
+    .await?;
+    Ok(Fixture {
+        org,
+        kb,
+        acme,
+        merged,
+    })
+}
+
+async fn teardown(pool: &PgPool, f: &Fixture) -> anyhow::Result<()> {
+    sqlx::query("DELETE FROM knowledge_bases WHERE id = $1")
+        .bind(f.kb)
+        .execute(pool)
+        .await?;
+    sqlx::query("DELETE FROM organizations WHERE id = $1")
+        .bind(f.org)
+        .execute(pool)
+        .await?;
+    Ok(())
+}
+
+#[tokio::test]
+async fn a_known_name_is_found_by_any_spelling_and_an_unknown_one_is_not() -> anyhow::Result<()> {
+    let Some(url) = utopia_store::test_db::url() else {
+        return Ok(());
+    };
+    let pool = PgPool::connect(&url).await?;
+    let f = seed(&pool).await?;
+    let run = async {
+        let find = |name: &'static str| {
+            let pool = pool.clone();
+            async move { utopia_store::resolution::existing_by_name(&pool, f.kb, name).await }
+        };
+        assert_eq!(find("Acme Corporation").await?, Some(f.acme), "原名");
+        assert_eq!(find("acme corporation").await?, Some(f.acme), "大小写不论");
+        assert_eq!(find("ACME").await?, Some(f.acme), "别名也算");
+        assert_eq!(
+            find("Acme").await?,
+            Some(f.acme),
+            "泛用后缀词干互推：Acme ↔ Acme Corporation"
+        );
+        assert_eq!(find("Nova Labs").await?, None, "并掉的不算");
+        assert_eq!(find("lawsuit against Acme").await?, None, "描述不是实体");
+        let _ = f.merged;
+        anyhow::Ok(())
+    }
+    .await;
+    teardown(&pool, &f).await?;
+    run
+}