Anchor: A young boy in a white jacket riding his bike on the patio.
Entailed: A boy riding his bike on the patio.
Contradiction: A girl is riding a bike on the patio.
Contradiction: A single person practices inside a classroom.
Contradiction: You could surmise that a taste for such ascetic modes of enjoyment would be as effective as a diet strategy making people fatter.  
Contradiction: Khrushchev is still trying to be the leader of the Jets.
Contradiction: The man is on the lake.