Anchor: Two scuba divers are diving underwater and meet with a friendly dolphin.
Entailed: Two people are diving.
Contradiction: The dolphin is trying to hide from Poseidon.
Contradiction: A computer is disposable only after ten years of use. 
Contradiction: Woman with red scarf visited club
Contradiction: You should not move back there.
Contradiction: Two girls in lifevests are hugging.