[QUESTION] Given the sentence "Window cleaner attached to a harness." is it true that "A window cleaner prepares to be hoisted up."?
A window cleaner attached to a harness does not imply the cleaner prepares to be hoisted up.
The answer is it is not possible to tell.

Q: If "A man is bicycling while talking on his cellphone." does that mean that "A man about to get into an accident on his bike."?
Options:
- yes
- it is not possible to tell
- no
A: Talking and biking does not imply he is about to get into an accident.
The answer is it is not possible to tell.

QUESTION: If "A man in a wetsuit with a surfboard walks along a beach." does that mean that "A man walks on the beach without a surfboard."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: A person with a surfboard cannot also be without a surfboard.
The answer is no.

[QUESTION] Premise: "A man standing on a table filming with people surrounding him."
Based on this premise, can we conclude that the hypothesis "A filming session is in progress." is true?
Options:
- yes
- it is not possible to tell
- no
The man is filming so there must be a filming session in progress.
The answer is yes.

Q: Test for natural language inference.
Premise: "These two ladies are working in the fields."
Hypothesis: "Two ladies are picking blueberries."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: The ladies can be working in the field doing something other than picking blueberries.
The answer is it is not possible to tell.

[QUESTION] Given the sentence "A drummer sitting at his drum set playing." can we conclude that "The person is a professional musician."?
Options:
- yes
- it is not possible to tell
- no
The drummer is playing while at his drum set but this does not necessarily mean that the person is a professional musician.
The answer is it is not possible to tell.