a person riding a skate board on a skate park
do you see the skateboard
yes
what is the color of skateboard
black
is any other skateboarder
1 more
what is another skateboard color
black
is the skate park clean
yes
is any other people
1 rollerblader
is there any tree
yes
do you see grass
no
do you see any animal
no
do you see any birds
no