Premise: "Two people wearing dark clothes are examining a tiger with instruments."\nHypothesis: "The two people are vets who are giving the tiger a check-up."\nDo we know that the hypothesis entailed by the premise?
Let's think step by step.
it is not possible to tell
Vets aren't the only people who can examine a tiger.

People examining a tiger with instruments are not necessarily giving the tiger a check up.

.

So, the answer is it is not possible to tell