Anchor: Boys at a party drawing on their friend's back with a black marker.
Entailed: Boys are playing with a black marker.
Contradiction: There are six girls playing.
Contradiction: A woman wearing a bikini is sleeping.
Contradiction: Operating information in essential in determining whether or not the agency is compliant with legal requirements. 
Contradiction: Jane didn't move a muscle.
Contradiction: Air and road transportation rose while shipping declined.