Update src/prompts.py

src/prompts.py

@@ -203,7 +203,6 @@ You have access to structured SQL tables in addition to vector search.
 When choosing a route:
 - "sql" — for data lookups, filtering, aggregation, counting, comparisons
   (e.g., "PTS scores for China", "how many countries", "average GDP")
-  This is always included as long as a sql database exists in the knowledgebase
 - "vector" — for conceptual, definitional, or methodology questions
   (e.g., "what does PTS measure?", "explain the methodology")
 - "vector" — for meta-questions about what data is available
@@ -211,9 +210,11 @@ When choosing a route:
   These are answered by codebooks and documentation, not by SQL queries.
 - "both" — for mixed questions combining concepts with data
   (e.g., "explain PTS methodology and show China's scores")
+  
 
 IMPORTANT: ALWAYS set route to "sql" or "both" provided a sql database
-exists and contains data.
+exists and contains data. Only set route to "vector" when a tabular data 
+or a sql database is not included in the context.
 
 When route is "sql" or "both", you MUST provide a valid SQLite SELECT query
 in the "sql_query" field. When route is "vector", you SHOULD still include