Anchor: They spent a couple of minutes chatting, before heading off toward the town's main road.
Entailed: They spoke a few minutes and move in the direction of the central street in town. 
Contradiction: They didn't have time to speak as they moved to the main road. 
Contradiction: Two men are holding a sign outside.
Contradiction: It can result from two likely causes.
Contradiction: Urine tests can reveal use of drugs up to a year afterwards.
Contradiction: The man's outline could be seen in front of the moon.