Premise: "A man with a yellow snow shovel stands on the sidewalk."\nHypothesis: "A man about to shovel his sidewalk from the big snowstorm."\nDo we know that the hypothesis entailed by the premise?
A step-by-step solution is:
it is not possible to tell
Snow on a sidewalk does not necessarily come from a big snowstorm.

.

So, the answer is it is not possible to tell