Assertion: elevator shaft | /r/HasProperty | extended by a closure element
Facets:
value: for a ventilation opening
type: PURPOSE
Source sentences:
text: 4 a building section as in 3 with a system for ventilation and / or smoke extraction of the elevator shaft around sensors shown there and with a system for ventilation and / or smoke extraction of the elevator shaft which is extended by a closure element for a ventilation opening.