Anchor: A person on a skateboard jumps in a curve on the sidewalk.
Entailed: The person is outdoors.
Contradiction: The person is on a bicycle.
Contradiction: A woman holds a gun on a street.
Contradiction: My husband and I go to vote every time, no matter for what. 
Contradiction: I've heard that it's going to be warm this weekend.
Contradiction: A man is pulling a cart.