```json { "action": "tool_call", "reasoning": "I have the columns and types for raw.adsl from step-3, but I need the same information for raw.ae to provide a complete answer covering both tables in the dataset.", "tool": "query_sql", "args": { "sql": "SELECT table_name, column_name, phys_type, semantic_role FROM meta.columns WHERE table_name = 'ae' ORDER BY column_name", "purpose": "Get all columns, types, and semantic roles for the ae table to complete the dataset column listing", "source": "raw" } } ```