Use reasoning to lead to the answer of the following question:
Premise: "A woman competitor on a white horse jumping over a fence."\nHypothesis: "A jockey competing at an event."\nIs the hypothesis entailed by the premise?\nOptions:\n- yes\n- it is not possible to tell\n- no

it is not possible to tell
A competitor on a horse jumping over a fence does not necessarily imply competing at an event.

.

Therefore, the answer is it is not possible to tell