Anchor: But behind them were subtle, insistent forces at work, urging the memories of old wrongs, deprecating the weakness of half-and-half measures, fomenting misunderstandings.
Entailed: The forces were at work behind them.
Contradiction: The forces were at work in front of them.
Contradiction: Even though I knew they could hear me, I still didn't say anything. 
Contradiction: The little girl is playing dress-up outside today.
Contradiction: The woman with blonde hair is standing alone.
Contradiction: A man is sleeping.