Premise: "A dirt bike rider jumps in the air."\nHypothesis: "The dirt bike is green."\nDo we know that the hypothesis entailed by the premise?
Let’s work this out in a step by step way to be sure we have the right answer.
it is not possible to tell
The dirt bike rider might not be on a bike when he jumps.

Not all dirt bikes are green.

.

Therefore, the answer is it is not possible to tell