Anchor: A mixed sex group wear lobster bibs and wield mallets as they dine on crab at a restaurant.
Entailed: People are eating crab for dinner.
Contradiction: Crabs are using mallets to eat humans for dinner.
Contradiction: A group of people are eating salad.
Contradiction: Everyone in the group is a vegan.
Contradiction: A lonely man is sitting by himself and eating an omelette.
Contradiction: there were only men in the women