diff --git a/backend/app/five_w1h_ingestion.py b/backend/app/five_w1h_ingestion.py
index 82f9930c6..8bc90024d 100644
--- a/backend/app/five_w1h_ingestion.py
+++ b/backend/app/five_w1h_ingestion.py
@@ -9,7 +9,6 @@
 
 from lineageweave.five_w1h import assemble_five_w1h_slots, slots_payload
 
-from .entity_relationship_ingestion import fetch_post_counterparties
 from .post_chat_ingestion import find_linked_post_ids
 from .post_summary_ingestion import fetch_persisted_summary
 
@@ -42,11 +41,9 @@ async def load_five_w1h_slots(
         )
         linked_titles = [row["post_title"] for row in rows if can_see_post(row)]
 
-    counterparties = await fetch_post_counterparties(conn, post_id)
     slots = assemble_five_w1h_slots(
         roles=summary.get("roles_and_responsibilities", []),
         key_events=summary.get("key_events", []),
-        counterparties=[row["counterparty_entity_name"] for row in counterparties],
         lineage_node_labels=linked_titles,
         evidence_claims=[dict(row) for row in evidence_claims],
     )
diff --git a/lineageweave/five_w1h.py b/lineageweave/five_w1h.py
index c2804aac6..b030f0cf6 100644
--- a/lineageweave/five_w1h.py
+++ b/lineageweave/five_w1h.py
@@ -15,7 +15,6 @@
     "who": ("prov_person", "prov_organization", "prov_team", "prov_software_agent"),
     "what": ("node_post",),
     "when": (),
-    "where": ("prov_organization",),
     "why": (),
     "how": (),
 }
@@ -50,7 +49,6 @@ def assemble_five_w1h_slots(
     *,
     roles: list[dict[str, Any]],
     key_events: list[str],
-    counterparties: list[str] | None = None,
     lineage_node_labels: list[str] | None = None,
     evidence_claims: list[dict[str, Any]] | None = None,
 ) -> dict[str, list[dict[str, Any]]]:
@@ -70,13 +68,6 @@ def assemble_five_w1h_slots(
         item = _value(role.get("actor_name"), "post_summary_role", (actor_type,))
         if item:
             slots["who"].append(item)
-        affiliation = _value(
-            role.get("affiliated_organization_name"),
-            "post_summary_role.affiliated_organization_name",
-            ("prov_organization",),
-        )
-        if affiliation:
-            slots["where"].append(affiliation)
 
     for event in key_events:
         item = _value(event, "post_summary_event", _SLOT_LOOKUP_CODES["what"])
@@ -100,11 +91,6 @@ def assemble_five_w1h_slots(
             if item:
                 slots["what"].append(item)
 
-    for name in counterparties or []:
-        item = _value(name, "post_counterparty_entity", ("prov_organization",))
-        if item:
-            slots["where"].append(item)
-
     return {slot: _unique(values) for slot, values in slots.items()}
 
 
diff --git a/tests/test_five_w1h.py b/tests/test_five_w1h.py
index 60b5735c7..39fa26560 100644
--- a/tests/test_five_w1h.py
+++ b/tests/test_five_w1h.py
@@ -11,7 +11,13 @@ def test_five_w1h_keeps_persisted_evidence_and_leaves_unsupported_slots_empty()
             }
         ],
         key_events=["검사 일정 확정"],
-        counterparties=["Northwind Labs"],
+        evidence_claims=[
+            {
+                "slot_code": "where",
+                "value_text": "Assembly Bay 4",
+                "evidence_text": "Inspection took place in Assembly Bay 4.",
+            }
+        ],
     )
 
     assert [item["text"] for item in slots["who"]] == ["Ada West"]
@@ -21,7 +27,11 @@ def test_five_w1h_keeps_persisted_evidence_and_leaves_unsupported_slots_empty()
     # PROV-O category (prov:generatedAtTime), and must not be shown here
     # as if it answered "when did this happen" (see five_w1h.py).
     assert slots["when"] == []
-    assert {item["text"] for item in slots["where"]} == {"Demo Corp", "Northwind Labs"}
+    assert [item["text"] for item in slots["where"]] == ["Assembly Bay 4"]
+    assert slots["where"][0]["source"] == "post_summary_five_w1h"
+    assert slots["where"][0]["evidence_text"] == (
+        "Inspection took place in Assembly Bay 4."
+    )
     assert slots["why"] == []
     assert slots["how"] == []