Student: Given the sentence "Four people are sitting on the wall." is it true that "Four people sitting down."?.
Teacher: Let's think:

Are sitting on the wall is a rephrasing of sitting down. So the final answer is yes.
Student: Given the sentence "Four people are sitting on the wall." is it true that "Four people sitting down."?.
Teacher: Let's think:

user
Are sitting on the wall is a rephrasing of sitting down. So the final answer is yes.
assistant
Student: Given the sentence "Four people are sitting on the wall." is it true that "Four people sitting down."?.
Teacher: Let's think:

Are sitting on the wall is a rephrasing of sitting down. So the final answer is yes.