Anchor: The two dogs, one dark and one light colored, are running outdoors.
Entailed: Two dogs running outside.
Contradiction: Two dogs playing indoors.
Contradiction: We will stop looking now.
Contradiction: 7. Screening for alcohol problems in the emergency department, Cherpitel C. 
Contradiction: I wanted to have a child but only if I could immediately go back to my career.
Contradiction: There are two men.