How many skateboarders are present?
Answer the question succinctly with one word or a brief phrase.

2

What is the black item that the skateboarder is wearing right leg?

knee pad

Is this person in the process of falling?

no

What color is the ramp?

brown

Do these kids know each other?

yes

What color is the man's shirt?

green

How trick is the skateboarder doing?

grinding