Anchor: Not only do the Italians feed them, they sell bags of birdseed to tourists, who in turn feed the pigeons.
Entailed: Italians feed them, and also sell the feed to tourists.
Contradiction: The Italians choose not to feed them, but sell all the feed to tourists.
Contradiction: I knew who they were.
Contradiction: a disabled veteran sells food.
Contradiction: There is a group of people fighting.
Contradiction: A group of people are around trucks and dollies.