Q: "A BMX biker performing a trick high above the ground with trees covering the background." Does this mean that "The biker is performing in a BMX competition."?
A: it is not possible to tell

Q: "An older, male construction worker wearing a yellow vest climbing down from the roof of a building onto scaffolding." Does this mean that "The man is climbing down a ladder."?
A: it is not possible to tell

Q: "Three young boys pay attention to something." Does this mean that "The three boys are young."?
A: yes

Q: "A group of people both men and woman are talking at a table." Does this mean that "they are girls there too"?
A:
no