A group of people, mostly teenagers, are working on a city sidewalk, digging and cleaning up vines.
All of the people are in their 50s.
If "A group of people, mostly teenagers, are working on a city sidewalk, digging and cleaning up vines.", can we conclude "All of the people are in their 50s."?

Options: 

 - yes

 - it is not possible to tell

 - no
no
If "A group of people, mostly teenagers, are working on a city sidewalk, digging and cleaning up vines.", can we conclude "All of the people are in their 50s."?

Options: 

 - yes

 - it is not possible to tell

 - no
user
no
assistant