Q: "A man in dirty jeans on top of a scaffolding." Does this mean that "A man is on top of scaffolding."?
A: yes

Q: "A young man poses for a pictures while standing in front of a pond." Does this mean that "The man is at the studio."?
A: no

Q: "a worker in uniform is cleaning off the windows of a restaurant." Does this mean that "The worker is using water to clean the windows."?
A: yes

Q: "A brightly colored orange and yellow wall is being worked on by a man." Does this mean that "A dark grey and black floor is being stripped by a woman."?
A:
no