Q: "Man in white cleans the floor." Does this mean that "A man is indoors."?
A: yes

Q: "Several people are enjoying each other's company at a house party." Does this mean that "Some people are crying and upset at the party."?
A: no

Q: "A brown and white dog is running with its mouth open." Does this mean that "A dog is running."?
A: yes

Q: "A group of people standing next to a "no truck's" sign and a yellow street sign." Does this mean that "group of people atanding next to a yellow sign wondering what it means"?
A:
it is not possible to tell