Anchor: A cameraman videotapes a skier climbing a tree stump.
Entailed: A man is recording a skier.
Contradiction: A cameraman is recording his dog running.
Contradiction: A girl eats ice cream.
Contradiction: The extent of the assessment can be determined by your judgement of the importance of the data. 
Contradiction: Two people are driving cars.
Contradiction: There is a closed set of constructs.