Q: "Choir singers performing on stage." Does this mean that "The people are dancing on the stage."?
A: no

Q: "A man wearing jeans, along sleeve t-shirt, and glasses is standing on a low metal railing." Does this mean that "A person is standing on a railing."?
A: yes

Q: "Two men in white shirts shave their heads." Does this mean that "Two men are joining a Neo-Nazi group."?
A: it is not possible to tell

Q: "A man with a headset is looking into a video camera." Does this mean that "The man is unaware of the video camera."?
A:
no