extraction prompt again

prompts/extract_entities.prompt

@@ -28,6 +28,10 @@ Output: { "topic": "macro",
           "sentimentScore": -0.4,
           "keywords": ["rate hike", "monetary policy"] }
 
+
+TIPS:
+- Prefer canonical entity forms over aliases when obvious (for example, use full organization or place names where helpful).
+
 INPUT:
 {cluster_json}