Student: Given the sentence "A redheaded boy swimming underwater." is it true that "A person swimming with a friend underwater."?.
Teacher: Let's think:

The boy swimming is not implied to be swimming with his friend. So the final answer is it is not possible to tell.
Student: Given the sentence "A redheaded boy swimming underwater." is it true that "A person swimming with a friend underwater."?.
Teacher: Let's think:

user
The boy swimming is not implied to be swimming with his friend. So the final answer is it is not possible to tell.
assistant
Student: Given the sentence "A redheaded boy swimming underwater." is it true that "A person swimming with a friend underwater."?.
Teacher: Let's think:

The boy swimming is not implied to be swimming with his friend. So the final answer is it is not possible to tell.