Premise: "A man in a green shirt directs trucks in preparation of the racetrack."
Hypothesis: "A man is directing trucks to staging areas on the racetrack so that the race can begin."
Do we know that the hypothesis entailed by the premise?
Let's solve step-by-step:
Preparation of a racetrack may describe a very large number of actions before the staging of vehicles. The answer is it is not possible to tell.