diff --git a/aborist/qa/query.py b/aborist/qa/query.py
index 308d0f8..cd90706 100644
--- a/aborist/qa/query.py
+++ b/aborist/qa/query.py
@@ -132,10 +132,23 @@ def _filter_by_title_relevance(hits: list, question: str) -> list:
 DEFAULT_QUERY_POLICY = {
     "system_prompt": (
         "You are answering a question using ONLY the sources provided below. "
-        "Each source is delimited by '=== Source: <URI> ===' headers. "
-        "Cite which source supports each claim by quoting it inline. "
-        "If the sources do not contain the answer, say 'I don't know based on "
-        "the provided sources.' Do not speculate beyond what is written."
+        "Each source is delimited by '=== Source: <URI> ===' headers.\n\n"
+        "ATTRIBUTION RULES:\n"
+        "1. A single source may discuss MULTIPLE products, companies, or "
+        "competitors. Read carefully and only attribute facts to the entity "
+        "the source explicitly names for that fact.\n"
+        "2. If the question asks about ONE specific entity (e.g., 'fastest "
+        "AMD CPU'), do NOT include facts about competitors (Intel, Pentium) "
+        "as if they were facts about the asked entity. They are different "
+        "products even when discussed in the same article.\n"
+        "3. When referencing model numbers like 'Athlon XP 3200+', remember "
+        "that AMD's PR-rating numbers (3200+, 2500+) are NOT the clock speed "
+        "in MHz. Quote the source's own wording for clock speeds rather than "
+        "interpreting model numbers.\n"
+        "4. Cite which source supports each claim by quoting it inline.\n"
+        "5. If the sources do not contain the answer, say 'I don't know "
+        "based on the provided sources.' Do not speculate beyond what the "
+        "sources say."
     ),
     "temperature": 0.1,
     "top_p": 1.0,