Q: "Doctor is performing a surgery." Does this mean that "Doctor is performing heart surgery on a patient"?
A: it is not possible to tell

Q: "A number of children wearing red shirts with white hearts stand outside a bus, watched by two men, receiving toys." Does this mean that "Some children are getting toys."?
A: yes

Q: "Two children, a boy and girl jumping on a trampoline with a black protective net in a backyard full of trees." Does this mean that "The children are siblings playing."?
A: it is not possible to tell

Q: "Someone wearing black shirt and shorts and another wearing gray top and jeans skirts are walking their dogs." Does this mean that "There are two people walking cats outside."?
A:
no