Anchor: A man playing a guitar while standing in front of a microphone singing.
Entailed: There is a person in front of a microphone holding a guitar.
Contradiction: The man plays a trombone.
Contradiction: There is a man wearing nothing but cowboy boots smashing a guitar on a stage in front of no one.
Contradiction: A man is playing checkers.
Contradiction: A man is seated playing drums.
Contradiction: A woman is playing a guitar.