Leo: Premise: "A man in rubber boots examines something on the ground."
Hypothesis: "The gentleman dropped his phone and is looking for it."
Do we know that the hypothesis entailed by the premise?
Mei: OK, So, let's think first...
Me:
Just because man examines something on the ground does not me he dropped his phone and is looking for it.
Thus, the answer is it is not possible to tell.