Q: "A teenager with striped sleeves playing a guitar." Does this mean that "A musician warms up the room."?
A: it is not possible to tell

Q: "A man standing at a urinal with a coffee cup." Does this mean that "The dancers are practicing."?
A: no

Q: "Two ladies walking through a wooded area." Does this mean that "A magician is sawing a woman in half with unexpectedly grave results."?
A: no

Q: "Several people in costumes from Disney movies are walking down a street." Does this mean that "People in Disney costumes walk down the street."?
A:
yes