red and white sign
street sign over stop sign
green and white sign
black and yellow sign
three signs on grey pole
two bikers near stop sign
double yellow line on road
road is light grey
grey guardrail across road
green trees near stop sign
High placed road sign
Smooth stretch of road
Strong grey metal divider
Large octagonal STOP sign
Long strands of green grass
Two narrow long lines
Dark bushy thick shrub
Greenspring Avenue direction sign
Bike rider in action
A head protection helmet
two cyclists riding down the road
a silver bicycle helmet
a black bicycle helmet
two people wearing bike helmets
a blue racing bicycle
a white racing bicycle
the handle bar of a bike
a red and white stop sign
a green and white street sign
a yellow and black sign
they are riding their bicycles
they are bicyclists.
there are two people
there are two bicycles
they are approaching a stop sign
they are approaching an intersection
the stop sign is red and white
the street sign is green and white
this sign is yellow and black
his bicycle frame is blue
street sign on pole
stop sign on pole
traffic sign on pole
helmet on the biker
helmet on the biker
man riding the  bike
man riding the bike
seat on the bike
metal rails in grass
shirt on the man

Objects:
sign
street sign
stop sign
sign
black/yellow sign
sign
ground
pole
biker
biker
sign
yellow line
road
road
road
guardrail
trees
sign
ground
road sign
stop sign
grass
lines
shrub
greenspring sign
bike rider
helmet
head
ground
cyclist
cyclist
road
helmet
person
person
helmet
helmet
bicycle
bicycle
handle
bike
sign
street sign
sign
bicycle
bicycle
person
person
people
bicycle
bicycle
sign
person
person
intersection
person
street
sign
sign
bicycle
sign
pole
sign
pole
helmet
biker
man
bike
seat
bike
metal rail
grass
shirt
man

Attributes:
name: sign
attrs: red
yellow
for street
white
stop
green
black
name: street sign
name: stop sign
attrs: octagonal
large
name: black/yellow sign
name: ground
name: pole
attrs: grey
name: biker
name: yellow line
attrs: double
name: road
attrs: light
grey
name: guardrail
attrs: grey
name: trees
attrs: green
name: road sign
attrs: high
name: grass
attrs: long
green
name: lines
attrs: long
narrow
name: shrub
attrs: bushy
thick
dark
name: greenspring sign
attrs: direction sign
name: bike rider
attrs: in action
name: helmet
attrs: for bike
black
protection
for bicycle
name: head
name: cyclist
name: person
name: bicycle
attrs: racing
white
blue
name: handle
name: bike
name: people
name: intersection
name: street
attrs: white
green
name: man
name: seat
name: metal rail
name: shirt

Contrastive attributes:
attr1: black
attr2: white
nouns: sign
attr1: red
attr2: green
nouns: sign
attr1: red
attr2: yellow
nouns: sign