site
type: Site
building primary function:
  value: Library
has part: My Building

My Building
type: Building
has part: floor

floor
type: Floor
area:
  value: 5000
  has unit: M 2
has part: space
has part: hvac zone
has part: lighting zone 1
has part: lighting zone 2

space
type: Space
net area:
  value: 500
  has unit: M 2
gross area:
  value: 650
  has unit: M 2
is part of: hvac zone
has part: lighting zone 1
has part: lighting zone 2