Model: AC20-FZK-Haus, an IFC4 sample building by
KIT, from the
IBPSA Project 1 test files.
Topology vocabulary: BOT (Building Topology Ontology, W3C LBD-CG).
Element classes from IfcOpenShell (IFC / ISO 16739).
Graph & geo3 (GeoSPARQL → 3D) by rete.
?e) maps onto the model. Room labels are language-tagged — match them as "Wohnen"@en.