a red helmet
a brown wall with many nails
a red and blue knee guard
a white tshirt with a black writtings
a blue short
a red and black scate board
a teenage boy holding a scateboard
a person watching the scaters
an airborne scater
a cloudy blue sky
The hand holding onto the tail of the board
The man on the skateboard in the air
The white wheels of the skateboard
The rail on the top of the vert
A brown helmet on the skater
The balck strap under the mans chin
The red and blue knee pad
The boys shoes are on the board
The red helmet with a bunch of stickers
A black pad on the boys elbow
a black skateboard with white wheels
a white skateboard wheel
a white skateboard wheel
a person in a black shirt
a person in the background
a blue and orange knee pad
a blue and orange knee pad
a red and white helmet
a person riding a skateboard
a black elbow pad
this is the sky
the sky is blue in color
this is the cloud
this is a man
this is the helmet
the man is light skinned
the helmet is black in color
this is a skate board
this is a knee pad
the helmet is red in color
a red knee pad
some white writing on side
a black helmet on head
a black shirt on man
the side of a skate ramp
clouds in the sky
wheels on  a skateboard
a man wearing a red helmet
a skateboarder in air
a shoe with white strings

Objects:
red helmet
boy
skaterboard
skater
top
rail
helmet
skater
pad
knee pad
shoe
shoe
board
skateboard
wheels
wheels
wheels
wheels
wheel
skateboard wheel
skateboard wheel
skateboard wheel
skateboard wheel
shirt
person
background
person
pad
knee pad
knee pad
knee
knee
pad
pad
helmet
person
skateboard
pad
elbow pad
helmet
board
helmet
side
writing
head
side
ramp
air
skateboarder

Attributes:
name: red helmet
name: boy
attrs: teenage
name: skaterboard
name: skater
attrs: airborne
name: top
name: rail
name: helmet
attrs: red
white
brown
black
name: pad
attrs: red
orange
black
blue
elbow
knee
name: knee pad
attrs: orange
blue
name: shoe
attrs: boy
name: board
attrs: skate
name: skateboard
attrs: black
name: wheels
attrs: white
name: wheel
attrs: skateboard
name: skateboard wheel
attrs: white
name: shirt
attrs: black
name: person
name: background
name: knee
attrs: blue
name: elbow pad
name: side
name: writing
attrs: white
name: head
name: ramp
attrs: skate
name: air
name: skateboarder

Contrastive attributes:
attr1: black
attr2: white
nouns: helmet
attr1: blue
attr2: red
nouns: pad