Premise: "A fencing match between two participants with an audience looking on and another fencer behind them."\nHypothesis: "One of the fencers is not fighting."\nDo we know that the hypothesis entailed by the premise?
Stream of thoughts:
it is not possible to tell
A fencer behind them is not implied to be a fencer not fighting.

.

So, the answer is it is not possible to tell