#basketball_player__basketeer__cager  an athlete who plays basketball
  supertype:  #athlete__jock  a person trained to compete in sports
  subtype:  #center.basketball_player  (basketball) the person who plays center
  subtype:  #dribbler  a basketball player who is dribbling the ball to advance it
  subtype:  #dunker  a basketball player who is able to make dunk shots
  subtype:  #forward.basketball_player  the person who plays the position of forward on a basketball team
     instance:  #Julius_Winfield_Erving__Erving__Julius_Erving__Dr._J
  subtype:  #guard.basketball_player  the person who plays the position of guard on a basketball team

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