Q: "Friends and family relax and sit on lawn chairs next to a fire, at night." Does this mean that "There is more than 2 people."?
A: yes

Q: "Two women are working at a ice cream parlor." Does this mean that "Two people serving ice cream to a small family"?
A: it is not possible to tell

Q: "A man in a bright green flux shirt walks along a crowded sidewalk under metal scaffolding at night." Does this mean that "A young man walking on a sidewalk"?
A: it is not possible to tell

Q: "Two men are standing underneath a waterfall." Does this mean that "Can't swim in a waterfall"?
A:
no