Leo: Premise: "Two men in white helmets and black coats are standing or sitting by a wall."
Hypothesis: "The men are part of a motorcycle gang."
Do we know that the hypothesis entailed by the premise?
Mei: OK, So, let's think first...
Me:
Two men in white helmets and black coats are standing or sitting by a wall does not indicate that they are part of a motorcycle gang.
Thus, the answer is it is not possible to tell.