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:

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

user
Not all girls brush their teeth in front of the sink. So the final answer is it is not possible to tell.
assistant
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:

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