Q: "a street performer in an orange jumpsuit rides a tall unicycle as a crowd watches" Does this mean that "The street performer sings a song."?
A: no

Q: "A man looking off into a blurred background with his hand on an unidentified machine." Does this mean that "The man's hand is stuck."?
A: it is not possible to tell

Q: "a motorcyclist wearing an orange and white uniform jumping off of his motorcycle after losing control, with two other motorcyclists racing up from behind." Does this mean that "A man in orange jumps from a motorcycle."?
A: yes

Q: "A man in a green shirt rides a skateboard down a rural street." Does this mean that "A man in a green shirt rides a skateboard to win"?
A:
it is not possible to tell