Q: "a woman riding a tan horse with a white mane around a rodeo arena." Does this mean that "A woman is riding a horse."?
A: yes

Q: "A little girl running down a brighly lit hallway." Does this mean that "There is a girl in the hallway."?
A: yes

Q: "Several customers shopping for vegetables in a farmer's market." Does this mean that "The farmer's market is empty."?
A: no

Q: "The backside of an old man painting a picture outside." Does this mean that "the front side view of an young man painting a picture indoors"?
A:
no