Anchor: Two people in suits are going upstairs.
Entailed: Two people in suits are heading up the stairs.
Contradiction: A boy is playing with a dog.
Contradiction: The cathedral of Piazza Mino da Fiesole did not exist before 1900.
Contradiction: This idea supports that the postal service should charge itself the same amount for delivery as it charges competitors. 
Contradiction: The man cooks hamburgers on the stove.
Contradiction: A worker in a blue shirt is cleaning the cafe.