Anchor: A rock band is playing outdoors next to the street, trying to sell their CDs out of a guitar case.
Entailed: A rock band is playing guitar outdoors.
Contradiction: A country band is playing outdoors.
Contradiction: A woman checks her phone on the subway platform.
Contradiction: A dog is swimming
Contradiction: My stepdad has never bought a computer before in his life.  
Contradiction: Players are getting bludgeoned with the ball as the audience watches.