Anchor: A man in a white shirt and jeans is playing the guitar.
Entailed: The man is clothed.
Contradiction: A man is playing the piano pretending to be Stevie Wonder.
Contradiction: His hands dropped to his sides as he fell backwards. 
Contradiction: He had a weapon. 
Contradiction: A group of people are in a grassy field.
Contradiction: Harold Washington was the first black mayor of Chicago.