Anchor: Naturally enough, a visit to the theater requires a good knowledge of Italian.
Entailed: You need a good knowledge of Italian to visit the theater. 
Contradiction: It is not necessary to know Italian to visit the theater. 
Contradiction: I blatantly refused to step foot on the ladder. 
Contradiction: In February 1998, we have reported that IRS had not clearly defined system modernization phases.
Contradiction: The Queen of Canada is fishing for bass.
Contradiction: a woman is reading on a bench