premise: Three workers, with life vests and hard hats, on a boat hanging from cables over water. hypothesis: 4 fisherman are hanging over the boat, trying to pet the shark.
contradiction: hanging from cables over water means you can't pet the shark because you need both hands for the cables.|contradiction: There are 3 people in the first sentence and 4 people in the second sentence.|contradiction: There are either three or 4 people.