Anchor: Dog with head in snow.
Entailed: Quadrupedal animal has it's face in snow.
Contradiction: The cat is staring at the snow from indoors.
Contradiction: That Buick was awful, it was clearly a lemon right off the bat. 
Contradiction: A kid in a striped shirt without shoes is on a man's shoulders.
Contradiction: John remained quiet adding to the awkward silence.
Contradiction: He said this just now.