Anchor: He could no longer make out individual riders, just the rising dust.
Entailed: All he could see was the rising dust. 
Contradiction: He saw each of the seven riders clearly. 
Contradiction: It would take you a whole day to drive to the Crayfish Falls from the highway. 
Contradiction: There is a man in a white shirt.
Contradiction: Two cats are waiting outside of the shop for their owner to come back.
Contradiction: The people are on the water in a boat