Anchor: There was no one in the hall, and we went straight up to the attic. 
Entailed: The hall was empty of other people.
Contradiction: The hall was filled with many people.
Contradiction: A person is grouped around a banner reading "We are demanding".
Contradiction: She always came back to what she remembered, that it can do no harm.
Contradiction: Nobody is standing.
Contradiction: a guy is listening to music on the street