Premise: "A man is eating a piece of corn on the cob."\nHypothesis: "The man is at a picnic."\nDo we know that the hypothesis entailed by the premise?
A step-by-step solution is:
it is not possible to tell
A man is eating a piece of corn on the cob does not indicate that he is at a picnic.

.

The final answer: it is not possible to tell