I need to classify all columns across the dataset's tables by their analytical role. The evidence shows column metadata from several tables, but I should get a complete view across all tables to provide a comprehensive classification. Let me query the metadata to get all columns with their types and semantic roles: ```json { "action": "tool_call", "reasoning": "I need to get a complete list of all columns across all tables with their physical types and semantic roles to classify them properly. The meta.columns table contains this information and will give me the full picture.", "tool": "query_sql", "args": { "sql": "SELECT table_name, column_name, phys_type, semantic_role, rough_kind FROM meta.columns ORDER BY table_name, column_name", "purpose": "Get complete column metadata across all tables to classify by analytical role", "source": "raw" } } ```