Anchor: That was for a reason. 
Entailed: There was a reason behind that.
Contradiction: That made no sense at all.
Contradiction: The grass I'm talking about has a shovel on the front of the book.
Contradiction: BSE is believed to come from cattle feed from infected proteins.
Contradiction: Two dogs play on a rug in the living room.
Contradiction: The man is holding a bowling ball.