For this chain-of-thought reasoning and answer, what was the question?
The fact that people are standing in the sidewalk doesn't imply that they are waiting for a concert to begin.
 A: it is not possible to tell
Q: Can we conclude from "A crowd of people standing on the sidewalk behind a barricade." that "There are people waiting for a concert to begin."?
Options:
- yes
- no
- it is not possible to tell