Q: "Two men working on a roof in yellow coats." Does this mean that "One man is holding a staple gun."?
A: it is not possible to tell

Q: "A crowd of people sitting on a lawn clapping." Does this mean that "A crowd of people enjoy an acapella themed outdoor Justin Bieber concert."?
A: no

Q: "One boy and a girl dressed in snowsuits, jumped in air with hands raised in lots of snow." Does this mean that "Two children are celebrating their win in a snowball fight."?
A: it is not possible to tell

Q: "Road worker watches for an incoming cement truck." Does this mean that "A road worker is watching a cement truck."?
A:
yes