Premise: "Two men are competing in a fencing competition."
Hypothesis: "Two men are competing in the semi-finals of the annual fencing competition."
Do we know that the hypothesis entailed by the premise? Now, let's be accurate as possible. Some thinking first:
Fencing competitions can take place in many forms over many time periods; one cannot presume two fencers are necessarily competing in the semi-finals of the annual fencing competition. So, the answer is it is not possible to tell.