Premise: "A man wearing suspenders poses outside."
Hypothesis: "The guy is having his picture taken by a professional photographer."
Do we know that the hypothesis entailed by the premise?
Let's solve step-by-step:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Posing does not imply he is posing for a picture or having his picture taken. The answer is it is not possible to tell.