Anchor: A group of people jump in the sand at the beach.
Entailed: A group of people on the beach.
Contradiction: A group of people at the mall.
Contradiction: No diving is permitted at the nearby islets.  
Contradiction: The man is being loud.
Contradiction: The catcher catches the ball by the mound.
Contradiction: A man standing outdoors on the sidewalk holding a snow removal tool.