[QUESTION] Given the sentence "A firefighter puts on his gas mask." is it true that "A firefighter with a yellow coat puts on a gas mask."?
A firefighter need not be wearing a yellow coat. Firefighters may wear different color uniforms or not even be in uniform at all.
The answer is it is not possible to tell.

Q: Premise: "A waitress wearing a red apron is clearing a table."
Hypothesis: "A woman is setting the table."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
A: Woman cannot be setting and clearing a table at same time.
The answer is no.

QUESTION: If "A dog in the grass in front of a building." does that mean that "A dog is at the vet."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: The dog is either at the vet or in the grass.
The answer is no.

[QUESTION] Can we conclude from "A race car screeches through a turn as spectators watch." that "The people are watching a movie."?
Options:
- yes
- no
- it is not possible to tell
People watching a movie can not watch as a race car screeches through a turn.
The answer is no.

Q: Premise: "A man in cap sitting in a chair with a red bag lying next to him."
Hypothesis: "The man saves a seat with his bag."
Do we know that the hypothesis entailed by the premise?
A: A bag next to someone is not necessarily his. A bag on a seat does not always mean that someone is saving a seat.
The answer is it is not possible to tell.

[QUESTION] Premise: "A man is wheeling a gurney full of medical supplies."
Hypothesis: "A guy is pushing a table full of medical materials to put away."
Do we know that the hypothesis entailed by the premise?
A gurney isn't a table. Wheeling a gurney full of medical supplies doesn't necessarily mean pushing it with the purpose to put away (a table or medical materials).
The answer is it is not possible to tell.