Premise: "A man is using a grinder on a locker's lock."\nHypothesis: "A man uses a grinder to hurt people inside a locker."\nDo we know that the hypothesis entailed by the premise?
Let's be accurate as possible. Think before you answer.
no
Either one uses a grinder on a locker's or to hurt people inside the locker.

.

The final answer: no