Anchor: I don't think she's in any immediate danger.
Entailed: I'm not certain whether she's in danger or not.
Contradiction: He was completely certain that she wasn't safe.
Contradiction: There is no referee  in this hockey game.
Contradiction: There are three boys in the photo
Contradiction: It is forbidden for anyone to bathe in these ponds in the summer months.
Contradiction: A dog is standing.