```json { "action": "tool_call", "reasoning": "The question asks for columns, their data types, and what each means. The dataset card shows raw.titanic has 16 columns with types listed, but doesn't provide detailed descriptions of what each column means. I'll use inspect_columns to get the full metadata including semantic roles and descriptions for all columns in the titanic table.", "tool": "inspect_columns", "args": { "table": "titanic" } } ```