Anchor: What form of wonder is a computer?"  Dave shook his head at the old man's monomania.
Entailed: Dave was not amused by the man's enthusiasm. 
Contradiction: Dave didn't hear what the man said.
Contradiction: The man is wearing a black shirt
Contradiction: They stand and observe while outside
Contradiction: The CalJustice Technology Project of the Public Interest Clearinghouse was not among the promising technology initiatives.
Contradiction: I asked for an A.B.C and I thought.