Q: "People walking in a supermarket." Does this mean that "10 humans walking"?
A: it is not possible to tell

Q: "A man with tools in both hands is focused on his work." Does this mean that "A man is concentrating."?
A: yes

Q: "A young girl wearing a blue jacket is stepping into a puddle." Does this mean that "A young girl is outdoors."?
A: yes

Q: "A man is fixing the guitar players costume." Does this mean that "A guy stands near a rock star."?
A:
it is not possible to tell