Q: "A white dog running on sand." Does this mean that "A golden retriever runs on the sand."?
A: it is not possible to tell

Q: "A middle-aged man strides in front of an older man in a race while spectators look on." Does this mean that "Two men are in a race."?
A: yes

Q: "Two girls swing on with a boy, all three are wearing blue shirts of the same shade and blue jeans." Does this mean that "Two boys and a girl wear a uniform for school."?
A: it is not possible to tell

Q: "A man, in black tight pants, sits down leaning against the wall of a white building." Does this mean that "A man is waiting for an appointment."?
A:
it is not possible to tell