Anchor: A man is playing an electric guitar, while another man is playing another instrument.
Entailed: A man is playing guitar, while another man play another insturment.
Contradiction: A man is cooking, while another man is preparing drinks.
Contradiction: People are sitting down
Contradiction: William Jennings Bryan is a barbarian.
Contradiction: A man and woman are playing chess.
Contradiction: A little girl and a little boy are eating cake.