Anchor: A man in a hat and tie performs with his violin on a street corner.
Entailed: A man is playing the violin.
Contradiction: The man is sitting on the street drinking coffee.
Contradiction: A group of people go out to a movie.
Contradiction: What are you majoring in?
Contradiction: These streaming applications are so efficient that they barely use any bandwidth. 
Contradiction: A black dog stands in the grass.