two people on motorized bikes
one person on motorized bike
wheel of motorized bike
black helmet on biker's head
yellow jacket on biker
gray helmet on biker's head
black jacket on biker
vehicle behind motorized bikes
front wheel on vehicle
front light on vehicle
truss on the bridge
truss on the bridge
truss on the bridge
truss on the bridge
truss on the bridge
truss on the bridge
truss on the bridge
truss on the bridge
truss on the bridge
truss on the bridge
a man sitting on a motorcycle
several vehicles loading on a ferry
a bridge under construction
a man wearing a yellow jacket
a silver passenger car
a man wearing black pants
a man wearing a black helmet
a man wearing a silver helmet
the front wheel of a motorcycle
the rear wheel of a motorcycle
black helmet on rider on right
silver helmet of rider on left
upside-down lettering on red surface
front tire of black motorcycle
green pack on man's back
crane in background
front driver's side tire of silver car
windshield of red motorcycle
driver's side mirror on silver car
rear tire of black motorcycle
motorists crossing bridge
a grey car
motorcyclist with muddy wheels
white and blue sky
a bridge being built
muddy motorcycle wheels
a man on a red motocycle
man wearing yellow jacket
a man with black helmet
a man with grey helmet

Objects:
person
motorized bike
wheel
bike
wheel
wheel
head
biker
helmet
jacket
biker
helmet
helmet
biker
biker
head
jacket
truss
bridge
truss
truss
bridge
truss
bridge
man
motorcycle
construction
bridge
helmet
man
helmet
man
silver helmet
wheel
rider
helmet
surface
lettering
tire
motorcycle
pack
background
crane
car
tire
windshield
motorcycle
side mirror
silver car
sky
bridge
wheel
wheels
man
motocycle
jacket
man
helmet
grey helmet
man

Attributes:
name: person
name: motorized bike
attrs: motorized
name: wheel
attrs: front wheel
muddy
name: bike
attrs: motorized
name: head
name: biker
name: helmet
attrs: grey
silver
gray
black
name: jacket
attrs: yellow
black
name: truss
name: bridge
name: man
name: motorcycle
attrs: red
black
name: construction
name: silver helmet
name: rider
name: surface
attrs: red
name: lettering
attrs: upside down
name: tire
attrs: front driver's
front tire
name: pack
attrs: green
name: background
name: crane
name: car
attrs: silver
name: windshield
name: side mirror
name: silver car
name: sky
attrs: white
blue
name: wheels
name: motocycle
attrs: red
name: grey helmet

Contrastive attributes:
attr1: black
attr2: silver
nouns: helmet