premise: A tennis player in a pink outfit serves the ball to her opponent. hypothesis: A naked man offers his balls to the police officer.
contradiction: A man can't be wearing a pink outfit and naked at once.|contradiction: A man is not a her.  If a person is in an outfit they are not naked.|contradiction: One can not be naked and in a pink outfit at the same time. One can not have multiple ball or a single balls. The use of the word ball and its plural, balls, is contradictory.