a wooden chair on the floor
a wooden bench is on a roof top
the bench has wood slats
the skylight is on the building's roof
a metal grate is under the bench
metal grate on floor 
a brown wooden park bench
The bench is wood.
The bench is empty.
The bench is brown.
The bench is vacant.
The bench is available.
The bench is unoccupied.
The bench is unattended.
wall behind bench 
a wooden bench sitting inside of a building