premise: Two men in baseball hats and bright yellow shirts work behind a fence. hypothesis: Tulips grow out of Popeye's ears.
contradiction: Two men in baseball hats and bright yellow shirts work behind a fence and Tulips grow out of Popeye's ears. Have no collaboration to each other unless sentence two is describing one of the men however that is not noted in the sentence. the reader does not have sufficient information to infer that popeye is one of the men.