Q: "Two large brown dogs are playing in the grass." Does this mean that "two dogs play while a third looks on"?
A: it is not possible to tell

Q: "Four people in protective clothing standing next to garbage bags." Does this mean that "The people are sleeping."?
A: no

Q: "A man wearing bright orange construction vest washing down a train with nothing but a long handled scrubber and a wash bucket" Does this mean that "The man is naked."?
A: no

Q: "several people are ascending a set of stairs while holding umbrellas." Does this mean that "People are enjoying a sunny day."?
A:
no