premise: Three workers, with life vests and hard hats, on a boat hanging from cables over water. hypothesis: Three lifeguards are haning from the boar, trying to save the dog from drowning.
neutral: Lifeguards are not the only profession that works near water.|neutral: Wearing life vests and hard hats does not mean the workers are lifeguards.|neutral: Lifeguards don't tend to wear hard hats, therefore the workers were probably not saving a dog from drowning.