Anchor: A man alone on a gravely beach.
Entailed: A man is on a beach
Contradiction: A man is with his wife on the beach
Contradiction: Three friends sit together at a picnic table sharing a lunch.
Contradiction: The man is on a crowded, sandy beach.
Contradiction: The man was on the beach which was crowded.
Contradiction: A man is with a crowd of people in a pond.