To say people and a group of people says the same thing. If the group is outside a building then that is the same thing as saying they are outside a building in some particular location.
This justifies what answer for what question? Q & A:
Can we conclude from "There is a group of people standing outside a small building in a village." that "People standing outside a building."?
Options:
- yes
- no
- it is not possible to tell
yes