For this chain-of-thought reasoning and answer, what was the question?
Just because the men are helping someone fix a bike doesn't mean they're in a bike race.
 A: it is not possible to tell
Q: Premise: "Two men are helping a third fix his upside-down bike on a gravel path."
Hypothesis: "The men are in a bike race."
Do we know that the hypothesis entailed by the premise?