Assertion: stairwell | /r/HasAspect | opening
Facets:
value: to the outside of the building
type: LOCATION
value: directly
type: MANNER
Source sentences:
text: The way that the balcony or vestibule is ventilated divides smokeproof enclosures into two basic types: mechanically ventilated which is not actually a smokeproof enclosures, where the vestibule and stairwell are ventilated by mechanical equipment, and naturally ventilated open air smokeproof enclosures where the open balcony or vestibule [or the stairwell] has openings directly to the outside of the building.