Q: "Two children playing musical instruments." Does this mean that "Two children play in their school band."?
A: it is not possible to tell

Q: "A little girl putting makeup on another girl's eyelid while a boy in the background watches." Does this mean that "Nobody is watching."?
A: no

Q: "Passengers waiting for the train in the snow in New York." Does this mean that "there are people outside"?
A: yes

Q: "Two men skiing up a hill but stopped and pointing at something as they on our their trek." Does this mean that "There are men outdoors."?
A:
yes