Anchor: A band playing some music with their instruments.
Entailed: The band plays.
Contradiction: Cream performs 'White Room' for an audience of 75,000 at the Miami Pop Festival.
Contradiction: He is riding a bicycle.
Contradiction: Old folks playing a game of cards.
Contradiction: I think it's too difficult to do, especially if you're a plumber. 
Contradiction: Cherpitel carried out a study of how to screen emergency room patients.