premise: Commuters wait for to cross a street. hypothesis: A diver flips in mid-air.
contradiction: The commuters crossing the street imply they are in a city setting where a diver flipping in mid-air implies he is at a pool.|contradiction: Commuters can't wait and be a diver flipping in mid-air at the same time.|contradiction: One cannot wait to cross the street and flip in mid-air simultaneously.