QUESTION: If "Two men sitting on the roof of a house while another one stands on a ladder." does that mean that "Two men are on a roof."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: Sitting on the roof is something that can be done on a roof.
The answer is yes.

[QUESTION] Given the sentence "Family of people right before they crash to their deaths on shoddy roller coaster." can we conclude that "Family of people willing to save the belongings of the person."?
Options:
- yes
- it is not possible to tell
- no
People right before they crash does not imply be willing to save belongings.
The answer is it is not possible to tell.

Q: Given the sentence "A group standing around in the background while a person stretches with her arms up in the air in the doorway." is it true that "A woman stretches before performing her gymnastic stunt."?
A: Just because group standing around in the background while a person stretches with her arms up in the air in the doorway does not indicate that she stretches before performing her gymnastic stunt.
The answer is it is not possible to tell.

QUESTION: Can we conclude from "A man in a welding mask welds a girder." that "The man is wearing a welding mask."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: A man in a welding mask is wearing a welding mask.
The answer is yes.

[QUESTION] Can we conclude from "A teppanyaki chef prepares dinner for restaurant guests." that "A teppanyaki chef prepares a specal meal for guests that are celebrating graduation."?
Options:
- yes
- no
- it is not possible to tell
A teppanyaki chef prepares dinner for restaurant guests does not imply he is making a specal meal for guests that are celebrating graduation.
The answer is it is not possible to tell.

Q: Can we conclude from "A woman in black sitting on a train." that "A woman in a black suit is sitting on a train."?
Options:
- yes
- no
- it is not possible to tell
A:
Although she is dressed in black it doesn't mean it's a suit.
The answer is it is not possible to tell.