Given the sentence "Two little boys play football on green grass." is it true that "The boys have grass stains on their clothes."? Let's be accurate as possible and think first.

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
The grass stains may be a result of playing football. not all grass stains result from playing football. Final answer: it is not possible to tell.