```json { "classifications": [ {"column": "event_name", "role": "dimension", "confidence": 1.0, "reason": "Single constant value 'Indian Premier League'; serves as a categorical label for filtering/grouping"}, {"column": "season", "role": "dimension", "confidence": 1.0, "reason": "19 distinct season values (e.g., '2007/08', '2009'); used to slice/filter data by time period"}, {"column": "match_number", "role": "dimension", "confidence": 0.9, "reason": "72 distinct values; low-cardinality numeric code used for grouping/filtering matches within a season"}, {"column": "date", "role": "dimension", "confidence": 1.0, "reason": "947 distinct dates; temporal dimension for grouping/filtering by time"}, {"column": "city", "role": "dimension", "confidence": 1.0, "reason": "38 distinct cities; categorical dimension for geographic grouping/filtering"}, {"column": "venue", "role": "dimension", "confidence": 1.0, "reason": "60 distinct venues; categorical dimension for location-based analysis"}, {"column": "team1", "role": "dimension", "confidence": 1.0, "reason": "19 distinct teams; categorical dimension for grouping/filtering by team"}, {"column": "team2", "role": "dimension", "confidence": 1.0, "reason": "19 distinct teams; categorical dimension for grouping/filtering by team"}, {"column": "toss_winner", "role": "dimension", "confidence": 1.0, "reason": "19 distinct teams; categorical dimension for analyzing toss outcomes"}, {"column": "toss_decision", "role": "dimension", "confidence": 1.0, "reason": "2 distinct values ('bat', 'field'); categorical dimension for grouping by toss decision"}, {"column": "team1_runs", "role": "measure", "confidence": 1.0, "reason": "Numeric quantity (2-287) to be aggregated with sum/avg for scoring analysis"}, {"column": "team1_wickets", "role": "measure", "confidence": 1.0, "reason": "Numeric quantity (0-10) to be aggregated with sum/avg for wicket analysis"}, {"column": "team2_runs", "role": "measure", "confidence": 1.0, "reason": "Numeric quantity (0-265) to be aggregated with sum/avg for scoring analysis"}, {"column": "team2_wickets", "role": "measure", "confidence": 1.0, "reason": "Numeric quantity (0-12) to be aggregated with sum/avg for wicket analysis"}, {"column": "winner", "role": "dimension", "confidence": 1.0, "reason": "20 distinct values (teams); categorical dimension for grouping/filtering by match winner"}, {"column": "result_type", "role": "dimension", "confidence": 1.0, "reason": "3 distinct values ('complete', 'no result', 'tie'); categorical dimension for match outcome classification"}, {"column": "win_by_runs", "role": "measure", "confidence": 1.0, "reason": "Numeric quantity (0-146) to be aggregated with sum/avg for margin analysis"}, {"column": "win_by_wickets", "role": "measure", "confidence": 1.0, "reason": "Numeric quantity (0-10) to be aggregated with sum/avg for margin analysis"}, {"column": "player_of_match", "role": "dimension", "confidence": 1.0, "reason": "322 distinct players; categorical dimension for grouping/filtering by award winner"}, {"column": "match_referee", "role": "dimension", "confidence": 1.0, "reason": "32 distinct referees; categorical dimension for grouping/filtering by official"}, {"column": "umpire1", "role": "dimension", "confidence": 1.0, "reason": "76 distinct umpires; categorical dimension for grouping/filtering by official"}, {"column": "umpire2", "role": "dimension", "confidence": 1.0, "reason": "71 distinct umpires; categorical dimension for grouping/filtering by official"}, {"column": "tv_umpire", "role": "dimension", "confidence": 1.0, "reason": "85 distinct umpires; categorical dimension for grouping/filtering by official"}, {"column": "reserve_umpire", "role": "dimension", "confidence": 1.0, "reason": "82 distinct umpires; categorical dimension for grouping/filtering by official"}, {"column": "match_type", "role": "dimension", "confidence": 1.0, "reason": "Single constant value 'T20'; categorical label for filtering/grouping"}, {"column": "overs_limit", "role": "dimension", "confidence": 1.0, "reason": "Single constant value '20'; categorical label for match format"}, {"column": "balls_per_over", "role": "dimension", "confidence": 1.0, "reason": "Single constant value '6'; categorical label for match rules"}, {"column": "gender", "role": "dimension", "confidence": 1.0, "reason": "Single constant value 'male'; categorical label for filtering/grouping"}, {"column": "team_type", "role": "dimension", "confidence": 1.0, "reason": "Single constant value 'club'; categorical label for filtering/grouping"}, {"column": "team1_players", "role": "attribute", "confidence": 1.0, "reason": "1225 distinct comma-separated player lists; descriptive content for display, not for grouping/aggregation"}, {"column": "team2_players", "role": "attribute", "confidence": 1.0, "reason": "1223 distinct comma-separated player lists; descriptive content for display, not for grouping/aggregation"} ] } ```