Q: "Two people stand in front of a magazine rack, looking at the magazines." Does this mean that "Two people are reading magazine covers"?
A: yes

Q: "A man wearing a swimsuit dives into a pool surrounded by a screen." Does this mean that "A man is going swimming in a screened pool."?
A: yes

Q: "A man in a yellow shirt is taking pictures while a man in jean overalls is changing a tire on a black car." Does this mean that "The man in the yellow shirt is taking a photo of the man in jean overalls changing a tire."?
A: it is not possible to tell

Q: "A little boy, playing t-ball on a sunny day with his dad watching from behind the fence." Does this mean that "A little boy is playing t ball."?
A:
yes