#cooperator__collaborator__partner  an associate who works with others toward a common goal; "partners in crime"
  supertype:  #associate  a person who joins with others in some activity; "he had to consult his associate before continuing"
  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:  #dancing_partner__dancingpartner  one of a pair of people who dance together

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