Q: Test for natural language inference.
Premise: "A old man washing the windows of city lights books."
Hypothesis: "There is an old man."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: There has to be an old man there to have an old man washing the windows.
The answer is yes.

Q: Premise: "An excited supporter of the obama ticket for the 2008 presidential election."
Based on this premise, can we conclude that the hypothesis "An obama hater." is true?
Options:
- yes
- it is not possible to tell
- no
A: One cannot be a hater and supporter at the same time.
The answer is no.

Q: Premise: "A man is working in a shop with donuts."
Hypothesis: "The man has no job."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
A: The man can not be working in a shop if he has no job.
The answer is no.

Q: Premise: "A man on a ladder repairs the roof of a building."
Based on this premise, can we conclude that the hypothesis "A man on a ladder repairs the roof." is true?
Options:
- yes
- it is not possible to tell
- no
A:
One repairing the roof of a building is always repairing a roof.
The answer is yes.