Q: "A man goes sideways in the air to hit a beach volleyball." Does this mean that "A man is outdoors."?
A: yes

Q: "A white truck filled with a sofa, table, wrapped blue blankets, and a steel gurney standing under a thin tree." Does this mean that "The truck is empty"?
A: no

Q: "Smiling woman sitting in snow." Does this mean that "A woman watches a documentary on the Arctic."?
A: no

Q: "The person wearing tennis shoes is standing on the sand." Does this mean that "Someone is doing exercise."?
A:
it is not possible to tell