Q: "A man on YouTube teaching a class." Does this mean that "A YouTube video features a man teaching a class."?
A: yes

Q: "A woman walking down the sidewalk beside a cheeseburger advertisement." Does this mean that "The woman briefly glanced at the advertisement."?
A: it is not possible to tell

Q: "A person jumps high in the air holding onto their bicycle." Does this mean that "A person runs through the forest."?
A: no

Q: "A man sits atop a motorcycle with both of his legs to one side." Does this mean that "A tired man drives a car."?
A:
no