#bridge_player__hand  a card player in a game of bridge; "we need a 4th hand for bridge"
  supertype:  #card_player  someone who plays (or knows how to play) card games
  subtype:  #bidder.bridge_player  someone who makes a bid at cards
     subtype:  #preemptor__pre-emptor__preemptor  a bidder in bridge who makes a preemptive bid
  subtype:  #bridge_partner  one of a pair of bridge players who are on the same side of the game
     subtype:  #raiser  a bridge partner who increases the partner's bid
  subtype:  #declarer__contractor  the bridge player in contract bridge who wins the bidding and can declare which suit is to be trumps

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