Anchor: A man in a gray shirt plays electric guitar while a shirtless man in the background plays drums.
Entailed: A man in a gray shirt plays electric guitar
Contradiction: A man in a gray shirt doesn't play electric guitar
Contradiction: A woman bounces up and down.
Contradiction: The ropes dangled off the twelve foot stone block.
Contradiction: She knew that she would find Tommy immediately once Mrs. Vandemeyer left. 
Contradiction: A person with dark skin wears a police uniform.