Anchor: The 15-year-old died with the band playing on his headphones.
Entailed: Music was playing when the 15-year-old died.
Contradiction: The teen is alive. 
Contradiction: the cat eats pigs
Contradiction: Cardinal Richelieu created the academy to have the ultimate say over the French language.
Contradiction: A man and his son walk down the street.
Contradiction: A man is standing on stairs.