Anchor: One man who has a black backpack is approaching an escalator.
Entailed: Someone with a backpack is approaching moving stairs.
Contradiction: A woman with a black purse is waiting for an elevator.
Contradiction: Soldiers are at boot camp.
Contradiction: It is believed that Mary received news over the grotto.
Contradiction: there is only 1 person at the bus stop
Contradiction: There are people having a conversation.