```json {"classifications": [{"column": "Season", "label": "none", "confidence": 1.0, "reason": "Single value representing the year/season, not a key."}, {"column": "Week", "label": "none", "confidence": 1.0, "reason": "Single value representing the week, not a key."}, {"column": "GameSlot", "label": "none", "confidence": 1.0, "reason": "Categorical time slot for the game."}, {"column": "Date", "label": "none", "confidence": 1.0, "reason": "Date of the game, not a key."}, {"column": "AwayTeam", "label": "foreign_key", "confidence": 0.9, "reason": "Team abbreviation, likely references a Teams table."}, {"column": "HomeTeam", "label": "foreign_key", "confidence": 0.9, "reason": "Team abbreviation, likely references a Teams table."}, {"column": "Quarter", "label": "none", "confidence": 1.0, "reason": "Categorical value for the game quarter."}, {"column": "DriveNumber", "label": "none", "confidence": 1.0, "reason": "Sequential number within a game, not globally unique."}, {"column": "TeamWithPossession", "label": "foreign_key", "confidence": 0.9, "reason": "Team name, likely references a Teams table."}, {"column": "IsScoringDrive", "label": "none", "confidence": 1.0, "reason": "Boolean indicator."}, {"column": "PlayNumberInDrive", "label": "none", "confidence": 1.0, "reason": "Sequential number within a drive, not globally unique."}, {"column": "IsScoringPlay", "label": "none", "confidence": 1.0, "reason": "Boolean indicator."}, {"column": "PlayOutcome", "label": "none", "confidence": 1.0, "reason": "Categorical description of the play result."}, {"column": "PlayStart", "label": "none", "confidence": 1.0, "reason": "Down, distance, and field position text."}, {"column": "PlayTimeFormation", "label": "none", "confidence": 1.0, "reason": "Time and formation text."}, {"column": "PlayDescription", "label": "none", "confidence": 1.0, "reason": "Text description of the play, high cardinality but not a key (95.9% distinct)."}]} ```