Anchor: A choir and an orchestra performing a musical piece in some kind of theater hall.
Entailed: Musicians perform a musical piece at a theater hall.
Contradiction: A boy ban performs at a theater hall.
Contradiction: A woman is petting a cat.
Contradiction: I can't think of the author's name, but I remember some of the books he wrote. 
Contradiction: No, a great, unfinished work is always worse than a finished one.
Contradiction: The tractors worked well in mud flats.