```json {"action": "tool_call", "reasoning": "I need to list all 69 columns, their data types, and their meanings. I will query the meta.columns table to get the complete list of columns, their physical types, and semantic roles.", "tool": "query_sql", "args": {"sql": "SELECT column_name, phys_type, semantic_role, rough_kind FROM meta.columns WHERE table_name = 'benchmarks' ORDER BY column_name;", "purpose": "Get all columns, data types, and semantic roles for the benchmarks table", "source": "raw"}} ```