Q: "A young boy wearing a helmet and riding a bike in a park." Does this mean that "The young boy is outside."?
A: yes

Q: "A man is looking through a microscope and working on electronics." Does this mean that "A man is looking at something under a science instrument."?
A: yes

Q: "A Asian man takes a ride on his motorcycle on a brick roadway." Does this mean that "A man rides his red motorcycle."?
A: it is not possible to tell

Q: "One guy playing his instrument." Does this mean that "One man is playing his instrument."?
A:
yes