Q: "A woman is posing strangely against the wall." Does this mean that "A man and a tree."?
A: no

Q: "Two women having a meal, one of which is laughing." Does this mean that "Two men having a meal, one of which is laughing."?
A: no

Q: "A uniformed man in the Army is training a German Shepherd using an arm guard." Does this mean that "The man is watching the German Shepherd sleep."?
A: no

Q: "A man in a yellow helmet looks up, while people on the bridge watch." Does this mean that "The man in the yellow helmet is not on the bridge."?
A:
it is not possible to tell