Anchor: Two males are sitting on a dock, one of which is playing guitar, and another two are standing in front of them.
Entailed: A man playing a guitar as a man stands in front of him.
Contradiction: None of the men have musical instruments with them.
Contradiction: Four people hike through the desert.
Contradiction: Two men are swimming while another two are watching them.
Contradiction: A woman plays her guitar while a guy stands in front of her.
Contradiction: A boat crashes into the dangerous rocks.