Q: "A man riding a bike, while two dogs follow him." Does this mean that "The man is walking his dogs."?
A: it is not possible to tell

Q: "People at a market have set their tents up in front of a building." Does this mean that "People are buying goods."?
A: it is not possible to tell

Q: "A man in a suit and red tie walking down a city sidewalk." Does this mean that "A man walking outside"?
A: it is not possible to tell

Q: "A man with sunglasses and earphones is on a city street holding an mp3 player in his hand." Does this mean that "Nobody has glasses."?
A:
no