```json {"role": "dimension", "confidence": 0.75, "reason": "PlayTimeFormation appears to be a structured time+formation code (e.g., '00:01 1st') used for grouping/filtering plays by time period and formation type. While cardinality is high (78% of rows), the structured format and name suggest it's used for slicing data rather than free-form display. Not an identifier (not a key), not a measure (not numeric aggregate), not purely descriptive text."} ```