For this chain-of-thought reasoning and answer, what was the question?
The group of constructions workers doesn't necessarily consist of both men and women.
 A: it is not possible to tell
Q: Premise: "A group of construction workers going down a flight of stairs."
Based on this premise, can we conclude that the hypothesis "Men and women walked down the stairs." is true?
Options:
- yes
- it is not possible to tell
- no