People on their motorcycles.
Lights on the bike.
Tire on the bike,.
Man wearing a helmet.
Trees in the background.
Trees against the sky.
Man with bare feet.
Mirror on the bike.
Boots on the rider.
Sky in the background.
motorcycle helmet on head
black rubber body suit
person sitting on motorcycle
side mirror on motorcycle
black rubber bike tire
wooden log barrier fence
tree with no leaves
grey metal electrical pole
evergreen tree by road
wind shield on motorcycle
A man in a black suit
A man on a motorcycle
A man on a motorcycle
A dark colored motorcycle
A dark colored motorcycle
A spandex full body suit
some power lines
A small group of trees
A small group of trees
A pair of people on motorcycles
The back of a guy in shiny black clothes.
Back of the head of a man turned around.
A man sitting on a bike to the right of a man.
Bike with large triangle headlight on the front.
Two motor bikes in the photo.
Two men sitting on bikes.
Hands on a man turned around backwards.
Visible face through a helmet on the man on the left.
Bare feet on a man standing between two bikes.
Two black front tires on bikes.
This is a person
This is a person
This is a person
This is a helmet
This is a helmet
Head of a person
Head of a person
Head of a person
Leg of a person
Leg of a person

Objects:
people
motorcycle
motorcycle
bike
lights
tire
tire
bike
bike
man
helmet
boots
boots
rider
rider
motorcycle helmet
bodysuit
person
motorcycle
mirror
motorcycle
bike
electrical pole
windshield
motorcycle
ground
motorcycle
trees
man
head
man
bikes
two men
bare feet
person
helmet
person
head
clock
leg
leg
person
person
leg
leg

Attributes:
name: people
name: motorcycle
name: bike
attrs: rubber
black
name: lights
name: tire
name: man
name: helmet
name: boots
name: rider
name: motorcycle helmet
name: bodysuit
attrs: rubber
black
name: person
name: mirror
name: electrical pole
attrs: grey
metal
name: windshield
name: ground
name: trees
name: head
name: bikes
name: two men
name: bare feet
attrs: bare
name: clock
name: leg

Contrastive attributes: