Anchor: Perhaps I have, and perhaps I haven't, he remarked dryly. 
Entailed: Perhaps I have or have not, he remarked coldly.
Contradiction: I have indeed been there before, he said.
Contradiction: A man is skating.
Contradiction: A woman rides a bus.
Contradiction: The Kal said they were failing miserably.
Contradiction: Some people have a yellow tube in the water.