Premise: "A man wearing a tan sports jacket is on an escalator with a man wearing a flowered shirt."
Hypothesis: "Two men are on an escalator."
Do we know that the hypothesis entailed by the premise?
Let's solve step-by-step:
A man wearing a tan sports jacket is on an escalator with a man wearing a flowered shirt so there should be Two men and they are on an escalator. The answer is yes.