2013-10-26: Revision 1.12 of the Building Ontology:

Consolidated: 
* ADDED: object property: gbo:isDefinedConstructionTypeOf, inverse of gbo:hasDefinedConstructionType
* ADDED: object property: gbo:isDefinedWindowTypeOf, inverse of ero:hasDefinedWindowType
* ADDED: object property: gbo:isDefinedMaterialOf, inverse of ero:hasDefinedMaterial
* ADDED: object property: gbo:isDefinedLayerOf, inverse of ero:hasDefinedLayer
* ADDED: object property: gbo:isDefinedAdjacentSurfaceOf, inverse of ero:hasDefinedAdjacentSurface