[Q] Can we conclude from "Man posing with his computer while touching the keyboard." that "A man is working on his computer keyboard."?
Options:
- yes
- no
- it is not possible to tell
[A] A man posing with his computer is not necessarily working on his computer.
The answer is it is not possible to tell.

[Q] Premise: "A white dog and a black dog holding a toy between them in their mouths."
Based on this premise, can we conclude that the hypothesis "Two cats are playing with a ball of yarn." is true?
Options:
- yes
- it is not possible to tell
- no
[A] A white dog and a black dog are not two cats.
The answer is no.

[Q] Given the sentence "A black and white dog stands on the grass with a baseball in his mouth." is it true that "The dog is on the couch."?
[A] One cannot stand on the grass and be on the couch simultaneously.
The answer is no.