Q: "a boy in a purple shirt is doing a skateboard stunt on a wooden ramp beside a white building." Does this mean that "A boy is on a wooden ramp near a building."?
A: yes

Q: "A group of men are holding a meeting." Does this mean that "A group of men are enjoying a picnic."?
A: no

Q: "People watch a group of runners on the street." Does this mean that "There are a group of people running on a street."?
A: yes

Q: "Two young boys running down an upper level breezeway." Does this mean that "The young boys are wearing hoodies"?
A:
it is not possible to tell