[QUESTION] Test for natural language inference.
Premise: "A nosy librarian is holding a selection of books while telling the cameraman to be quiet."
Hypothesis: "The cameraman is holding books while the librarian films."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Either the librarian films the cameraman or she is holding books she could not do both simultaneously.
The answer is no.

[QUESTION] Test for natural language inference.
Premise: "A man in a green swimsuit entering the water headfirst after jumping off a rock."
Hypothesis: "A man is diving into the water."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
Entering the water headfirst after jumping off a rock normally refers to the act of diving.
The answer is yes.

[QUESTION] Given the sentence "A businessman is reading on a subway." can we conclude that "The subway car is empty."?
Options:
- yes
- it is not possible to tell
- no
A businessman cannot be reading on a subway if the subway car is empty.
The answer is no.

[QUESTION] Test for natural language inference.
Premise: "Firetrucks and other emergency vehicles are responding to an emergency."
Hypothesis: "The siren is on."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
The firetrucks and other emergency vehicles are responding to an emergency but that doesn't mean the siren is on.
The answer is it is not possible to tell.