Answer the following question, with explanation first.
Test for natural language inference.\nPremise: "Three men wearing safety vests examine a field."\nHypothesis: "Three men in safety vests are outside."\nIs the hypothesis entailed by the premise?\nOptions:\n- yes\n- no\n- it is not possible to tell

yes
In order to examine a field the men need to be outside.

.

Therefore, the answer is yes