Premise: "A jockey rides his brown horse as the horse gallops along the track."
Hypothesis: "The jockey is getting ready to race with the horse."
Do we know that the hypothesis entailed by the premise?
Let's solve step-by-step:
A jockey rides his brown horse as the horse gallops along the track does not indicate that the jockey is getting ready to race with the horse. The answer is it is not possible to tell.