#lawn_tennis__tennis  a game played with rackets by two or four players who hit a ball back and forth over a net that divides the court
  supertype:  #court_game__courtgame  an athletic game played on a court
  subtype:  #professional_tennis  #singles  #doubles  #royal_tennis
  part:  #footfault  a fault that occurs when the server in tennis fails to keep both feet behind the baseline
  part:  #return  a tennis stroke that returns the ball to the other player; "he won the point on a cross-court return"
  part:  #rally  an exchange of several strokes
  part:  #service_break__servicebreak  a tennis game won on the opponent's service
  part:  #advantage.game_point  first point scored after deuce
  part:  #set_point__setpoint  the final point needed to win a set in tennis

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