Anchor: A brown dog is biting a white and tan dog on the snout.
Entailed: The dogs are biting each other.
Contradiction: The dogs are doing their own things.
Contradiction: Things were looking up for him
Contradiction: When the House Banking Committee got interested, George Bush did the same thing. 
Contradiction: the man plays a piano
Contradiction: it might have been a good idea to proceed, but we didn't