Anchor: Football players gather around the referees.
Entailed: The football players are listening to the referees.
Contradiction: The football players are playing baseball.
Contradiction: The dog is asleep in the house
Contradiction: A man is on a bicycle in a race.
Contradiction: A man climbs a jungle gym while chewing gum.
Contradiction: General Services Administration, Office of Policy, Planning and Evaluation, Office of Information Technology, May 1996.