Anchor: People sitting in front of other people.
Entailed: People are sitting down.
Contradiction: People are doing jumping jacks in front of other people.
Contradiction: A plane crashed and people are dining!
Contradiction: This excerpt was taken from Kieso and Weygandt, Intermediate Accounting 7th edition. 
Contradiction: The woman takes a photograph of the wall.
Contradiction: A woman standing in a subway station.