Q: "A woman in a white long-sleeve shirt is leaning against a sleeping man in a green plaid shirt to attempt to sleep while sitting in a bus." Does this mean that "A woman has a clean white long-sleeve shirt."?
A: it is not possible to tell

Q: "A celebration in the street with people dancing and playing music." Does this mean that "People are dancing to music."?
A: yes

Q: " "Cafe Express" sign covered in graffiti." Does this mean that "A sign covered in graffiti."?
A: yes

Q: "Two guys gather around a table with two girls while drinking." Does this mean that "The two guys are drinking while the girls are gathered by the table."?
A:
no