a man riding down a rail on a  skateboard.
cement steps near a crowd.
a guy wearing a green shirt.
a metal hand rail.
a tree in front of a brick building.
a building behind a crowd.
a young man holding a skateboard.
a man in a dark blue shirt.
a man in a white shirt.
a shadow on the ground.
Spectators are watching skateboarder
Man is skateboarding
Skateboarder is in air
Skateboarder is on skateboard
Photographer is holding camera
Man is holding camcorder
Skateboarder's shirt is blue
Spectators are young
Skateboarder's hands are in the air
Man is a photographer
Skateboard under feet
Silver stair rail
Camera in a man's hands
Gray cement stairs in a skate park
Blue shirt on a man
Group of people watching a skateboarder
Man with a striped shirt
Man with a green shirt
Skateboard in a man's hands
Black jeans on a man
a skateboard with feet on it
a boy skateboarding in the air
a handrail outside and some stairs
a helmet on a head
a person with their arm in the air
a boy holding a skateboard
a boy with a backpack on
a building in the background
people taking pictures
a person using a video recorder
a man in a blue shirt
a man doing a trick on a skateboard
a man recording with a camera
a guy in white taking a picture
a crowd of people watching
a small kid in white with a skateboard
a kid in a white helmet
a metal rail
a bottle of beer
concrete steps

Objects:
man
rail
skateboard
steps
crowd
shirt
guy
building
tree
shirt
man
shirt
shadow
ground
spectators
skateboarder
air
photographer
camera
man
camcorder
hands
man
feet
hands
stairs
group
shirt
man
shirt
hands
skateboard
jeans
boy
handrail
helmet
head
person
arm
boy
backpack
background
people
pictures
person
video recorder
trick
camera
guy
white
picture
kid
white
kid
bottle

Attributes:
name: man
attrs: photographer
riding
slateboarding
young
holding
name: rail
attrs: silver
metal
name: skateboard
name: steps
attrs: cement
cocrete
name: crowd
attrs: watching
people
name: shirt
attrs: striped
white
skateboarder's
green
blue
dark
name: guy
name: building
attrs: brick'
name: tree
name: shadow
name: ground
name: spectators
attrs: young
name: skateboarder
name: air
name: photographer
name: camera
name: camcorder
name: hands
attrs: man's
skateboarder's
name: feet
name: stairs
attrs: cement
gray
name: group
name: jeans
attrs: black
name: boy
attrs: skateboarding
holding
name: handrail
name: helmet
attrs: white
name: head
name: person
name: arm
name: backpack
name: background
name: people
attrs: taking
name: pictures
name: video recorder
name: trick
name: white
name: picture
name: kid
attrs: sma;;
name: bottle
attrs: beer

Contrastive attributes:
attr1: blue
attr2: green
nouns: shirt