QUESTION: Can we conclude from "Two young men goofing around on the grass in front of the union building." that "The two young men are playing outside."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: Playing is a synonym for goofing around. Being on the grass in front of a building implies being outside.
The answer is yes.

QUESTION: Can we conclude from "An elderly man sitting on a bench." that "The man was on a bench."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: Was implies that the man had been sitting on the bench.
The answer is yes.

QUESTION: Can we conclude from "A man using a tripod is taking a photo of another man." that "A woman using a tripod is taking a photo of another woman."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly:
The man using the camera is not a woman. The subject man is not a woman.
The answer is no.