Anchor: He was politely requested by his colleague not to be an ass.
Entailed: He was told not to be a jackass.
Contradiction: His colleague told him to be a jackass.
Contradiction: A group of hippies are walking down a street.
Contradiction: Systems are inspected prior to entering operational use.
Contradiction: Two people sitting on a bench drinking mugs of hot chocolate.
Contradiction: A teen has a headband on.