Anchor: He could not hope to sustain his part indefinitely; sooner or later he was almost bound to betray himself, and then he would have thrown away a vital chance in mere foolhardiness.
Entailed: He would betray himself eventually.
Contradiction: He could keep this up forever.
Contradiction: The Dover Street Tube was so crowded that the two young people didn't get the chance to greet each other.
Contradiction: People are at a shopping mall.
Contradiction: A little boy on an asphalt road leaves his bike
Contradiction: A woman wearing large sunglasses standing.