Student: Given the sentence "A little girl is brushing her teeth." is it true that "The little girl is brushing her teeth in front of the sink."?.
Teacher: Let's think:

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 girls brush their teeth in front of the sink. So the final answer is it is not possible to tell.