Anchor: A man holds a guitar and sings.
Entailed: A singer plays guitar.
Contradiction: A man who can't sing is playing a ukulele.
Contradiction: A group of 4 individuals, two men and two women are attending an event.
Contradiction: Mailers should not blindly endorse anything labeled postal reform.
Contradiction: Among the organizations studied the pressure was not applied by oversight entities.
Contradiction: A man is outside.