Q: "A person in a red and black jacket with a black backpack scales a mountain face." Does this mean that "There is a person on the side of the mountain."?
A: yes

Q: "A boy in a blue hat and a yellow backpack is carrying a box while walking down the street." Does this mean that "A boy carries a box."?
A: yes

Q: "A man holding two bags of ice enters a house." Does this mean that "A man holding two bags of soil enters a car."?
A: no

Q: "A family of three people are watching men in costumes pass by." Does this mean that "A family of three are at a parade."?
A:
it is not possible to tell