Anchor: Two long-haired men with beards playing instruments, one a banjo the other a violin.
Entailed: Two men play a banjo and violin.
Contradiction: Two woman play a flute and cello.
Contradiction: It is clear that alcohol can be misused, but the ways of misusing alcohol are very discrete.
Contradiction: four girls play volleyball
Contradiction: They expected the results in the study to differ. 
Contradiction: A boy is playing basketball.