Q: "A boy is diving off a diving board into a swimming pool." Does this mean that "The boy dove off of the board for his coach."?
A: it is not possible to tell

Q: "A snowboarder grinding up a homemade ramp." Does this mean that "A person is snowboarding."?
A: yes

Q: "Two older women, one in darker clothing and one in lighter clothing, gather up grain as they work on the field." Does this mean that "Two woman are fighting each other"?
A: no

Q: "A person wearing a Darth Vader outfit and holding a violin and violin bow, is standing beside a cement wall, and is playing for some people." Does this mean that "There is a person in a Darth Vader outfit who doesn't know how to play instruments."?
A:
no