Anchor: Traffic was only recently diverted from passing through the aqueduct's arches, as pollution was threatening permanent damage to the irreplaceable structure.
Entailed: The danger pollution poised to the arch has caused traffic to be diverted away from passing under it.
Contradiction: Traffic passes under the arch constantly and no one has done anything to stop it. 
Contradiction: The kid is swiming labs in teh poole.
Contradiction: The woman is in an upright position
Contradiction: College students at the basketball game.
Contradiction: The people are walking barefoot in the sand.