the bird is black
birds on the trees
A large black bird in the tree
A number of birds roosting in a tree
Green leaves behind the brown tree trunk
A rough brown limb of the tree
A small brown rope hanging through the tree
A small black and white bird in the tree
A small white bird perching in the tree
Small black shadows on the large brown branch
This black bird is the highest in the tree
Small brown twigs on the tree
a white bird on a branch
trunk of a tree
legs of a white bird
a long branch over the trunk
thin branches of tree
a black bird on a branch
the legs of a bird
small leaves on a tree
green leaves of tree
twisted tree branches
A black bird in the tree
A white bird in the tree
The legs of the bird
A branch on the tree
A tree full of birds
A branch below the bird
Leaves on the tree
The bird is on a branch
The tree has green leaves
A branch with no birds on it
knot on a tree
limb on a tree
bark on a tree
croak in a tree
leaves on a branch
branches on a tree
bird in a tree
wire hanging behind the tree
shadows on the tree
sky  above the tree

Objects:
bird
bird
tree
bird
bird
bird
bird
bird
tree
rope
tree
white bird
shadows
twigs
twigs
twigs
twigs
twigs
bird
trunk
legs
white bird
branch
trunk
branches
branches
branches
branches
branches
bird
bird
bird
branch
leaves
branches
black bird
tree
bird
legs
branch
bird
bird
bird
bird
bird
trees
branch
branch
birds
birds
birds
birds
knot
limb
bark
leaves
branch
branches
bird
tree
wire
tree
sky

Attributes:
name: bird
attrs: white
black
name: tree
attrs: brown
white
black
name: rope
attrs: brown
name: white bird
attrs: white
name: shadows
attrs: black
name: twigs
attrs: brown
small
name: trunk
name: legs
name: branch
attrs: long
name: branches
attrs: thin
twisted
tree
name: leaves
attrs: small
name: black bird
attrs: black
name: trees
name: birds
name: knot
name: limb
name: bark
name: wire
name: sky

Contrastive attributes:
attr1: black
attr2: white
nouns: bird
tree