I need to identify the categorical columns in the dataset and count their distinct values. Let me start by inspecting the columns to understand their types and characteristics. ```json { "action": "tool_call", "reasoning": "I need to see the column metadata for the raw.ai_supercomputers table to identify which columns are categorical (text/VARCHAR types) and then count distinct values for each. I'll inspect the columns first to understand their types.", "tool": "inspect_columns", "args": { "table": "ai_supercomputers" } } ```