Premise: "A man in denim jeans lays on his back on the grass and enjoys a bottle of soda."\nHypothesis: "A man is at the park having a picnic."\nDo we know that the hypothesis entailed by the premise?
A step-by-step solution is:
it is not possible to tell
Grass does not have to be in a park and soda can be drunk at any time.

.

Thus, the answer is it is not possible to tell