Q: "In a science classroom a young man dressed in a black jacket solders a wire to a circuit board." Does this mean that "A young man is studying in a classroom."?
A: it is not possible to tell

Q: "construction workers appearing through a chain link fence." Does this mean that "The construction workers are working."?
A: it is not possible to tell

Q: "Man performing a dance in the street." Does this mean that "A street entertainer is dancing"?
A: yes

Q: "A girl wearing a headband is carrying a pink sign on the street." Does this mean that "The female is shopping at the mall."?
A:
no