Anchor: A man sitting in front of a crowd of children playing the cello and a woman beside him playing a harp while the children listen.
Entailed: Someone is playing music.
Contradiction: Nobody is playing a string instrument.
Contradiction: The room is very tidy.
Contradiction: The girl was on the train.
Contradiction: They shared a base with the German on the island.
Contradiction: Terms like yadda yadda yadda have a special utility.