| ChessPlayer(Chess player) | | chess_master, chess_player, patzer |
| appearance as argument number 1 |
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| (documentation ChessPlayer EnglishLanguage "A person who plays Chess.") | Sports.kif 455-455 | |
| (instance ChessPlayer ProfessionalGamePlayer) | Sports.kif 454-454 | Chess player is an instance of professional game player |
| appearance as argument number 2 |
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| (termFormat EnglishLanguage ChessPlayer "Chess player") | domainEnglishFormat.kif 64670-64670 |
| antecedent |
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| (=> (attribute ?PERSON ChessPlayer) (hasSkill Chess ?PERSON)) |
Sports.kif 448-450 |
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