```json { "action": "tool_call", "reasoning": "The question asks for a high-level understanding of what this dataset is about and what a single row represents. The card shows this is ITTF (International Table Tennis Federation) rankings data with two tables. I should read the overview insight section to get the narrative context about the dataset's purpose and row-level semantics.", "tool": "read_insight", "args": { "section": "overview" } } ```