Q: "A dog climbs a hill." Does this mean that "A dog is climbing."?
A: yes

Q: "A man in a yellow shirt guiding an ox which is pulling a cart through the forest." Does this mean that "There is an ox in the forest."?
A: yes

Q: "A young boy is playing with a slinky in the street" Does this mean that "The young boy is amused by slinkys."?
A: it is not possible to tell

Q: "A blond headed little boy in a tub pouring water on himself with a yellow cup." Does this mean that "The cup is black"?
A:
no