QUESTION: If "Three musicians perform on their guitars while singing." does that mean that "The people are playing guitar."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: Musicians are people are are playing their guitars in a performance.
The answer is yes.

QUESTION: Premise: "Three young men and an elderly lady are sitting at a table playing dominoes."
Based on this premise, can we conclude that the hypothesis "Three young women and an elderly man are sitting at a table playing dominoes." is true?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: Three young men cannot be three young women. An elderly lady is not an elderly man.
The answer is no.

QUESTION: If "Two construction workers wearing orange safety vests at the site of a job." does that mean that "Two construction workers are working at the site of a job."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly:
When two construction workers wearing orange safety vests at the site of a job need not necessarily mean that they are working.
The answer is it is not possible to tell.