[QUESTION] Given the sentence "A group of bike riders with helmets riding on a street." is it true that "A biker gang looking for trouble."?
Bike riders are not typically part of a biker gang looking for trouble.
The answer is it is not possible to tell.

[QUESTION] If "An airplane in a clear blue sky with a few clouds flies past a person on the grass." does that mean that "The plane is navigating through a storm."?
Options:
- yes
- it is not possible to tell
- no
A plane cannot be in a clear blue sky while also in a storm.
The answer is no.

[QUESTION] Given the sentence "People are visiting an old castle or fort." is it true that "People are touring an old castle or battlement."?
Visiting a castle doesn't imply that the people are touring it.
The answer is it is not possible to tell.

[QUESTION] Can we conclude from "Construction worker is checking the condition of the bits on a boring machine." that "Construction worker at work."?
Options:
- yes
- no
- it is not possible to tell

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The work of a construction worker includes checking the condition of a machine which is being used.
The answer is yes.