premise: SummerSlam was a show.
hypothesis: SummerSlam is a professional wrestling pay-per-view ( PPV ) event , produced annually in August by professional wrestling promotion WWE . SummerSlam ( 1991 ) was the fourth annual SummerSlam professional wrestling pay-per-view ( PPV ) event produced by the World Wrestling Federation ( WWF ) . SummerSlam ( 1992 ) was the fifth annual SummerSlam professional wrestling pay-per-view ( PPV ) event produced by the World Wrestling Federation ( WWF ) . SummerSlam ( 2011 ) was a professional wrestling pay-per-view ( PPV ) event produced by WWE that took place on August 14 , 2011 . SummerSlam ( 2016 ) was a professional wrestling pay-per-view ( PPV ) event and WWE Network event produced by WWE .