Q: "A worker is cleaning the streets after a heavy rain." Does this mean that "Nobody is cleaning."?
A: no

Q: "A man lays on a wood ramp while another holds a fishing pole." Does this mean that "They have caught some fish to eat for dinner later."?
A: it is not possible to tell

Q: "Boy with dark skin, standing on his head with legs spread, at the end of a floating wooden boat." Does this mean that "A boy does a head stand on a boat."?
A: yes

Q: "A boy playing in the waves, with a seagull in the foreground." Does this mean that "A boy is having fun in the ocean."?
A:
it is not possible to tell