premise: A man with a gray hair and wearing glasses is getting ready to shave a gray-haired man. hypothesis: A man is getting ready to shave a gray haired man.
entailment: "gray-haired" and "gray haired" are different spellings of the same thing. "getting ready to shave a gray haired man" is repeated word for word in both instances, only with a spelling difference of "gray haired", so it is redundant.