Anchor: So Dorcas knows nothing about that black beard, said Poirot thoughtfully, as we walked out into the hall again. 
Entailed: Poirot went into a corridor and spoke about Dorcas and the black beard.
Contradiction: Poirot said that Dorcas was very knowledgeable about the black beard. 
Contradiction: People rock out at the concert.
Contradiction: A little boy is holding a gun.
Contradiction: A man in red shirt and pants sits in front of a large sign displaying a yak.
Contradiction: Okay, that is good.