Q: "Several people with different costumes are gathered together at a Halloween party." Does this mean that "There are more than a few people at a party"?
A: yes

Q: "There is a cafe on a street corner with an oval painting on the corner of its building." Does this mean that "The cafe has just re-opened to the public after a horrible fire had gutted it 6 months earlier."?
A: it is not possible to tell

Q: "A man in a white helmet clings to a sheer rock face" Does this mean that "A man is using ropes to climb a mountain."?
A: it is not possible to tell

Q: "A woman in a black coat exits a large business building in an austere marbled setting, with an older building flying the flag of Germany in the background." Does this mean that "A woman leaving a large building."?
A:
yes