Anchor: Two children and their parents are on the floor opening presents.
Entailed: Two children are with their family indoors.
Contradiction: Two children are chained up by their parents in a basement.
Contradiction: A man is pondering the essence of a pier made from his wife.
Contradiction: The goal for the plane is a 3 hour mean time between maintenance.
Contradiction: The dogs are lazy and don't like to run.
Contradiction: I was researching the doctorate degree in Computer Science