Please answer the following question by reasoning step-by-step. Test for natural language inference.
Premise: "A white car and a yellow car race down the track."
Hypothesis: "Two formula one cars are racing."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell. Step-by-step reasoning:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Not all cars race down the track are Formula One cars. So the answer is it is not possible to tell.