Cathedral of Saint Mary of the Assumption, San Francisco roof structure
E374770
The Cathedral of Saint Mary of the Assumption roof structure in San Francisco is a landmark modernist concrete shell roof, celebrated for its innovative engineering and striking hyperbolic paraboloid form.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Cathedral of Saint Mary of the Assumption, San Francisco roof structure canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3639593 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Cathedral of Saint Mary of the Assumption, San Francisco roof structure Context triple: [Pier Luigi Nervi, designed, Cathedral of Saint Mary of the Assumption, San Francisco roof structure]
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A.
San Francisco City Hall
San Francisco City Hall is a historic Beaux-Arts landmark in the city’s Civic Center, serving as the seat of government and a prominent architectural symbol of San Francisco.
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B.
San Francisco Federal Building
The San Francisco Federal Building is a prominent contemporary government office tower in San Francisco known for its unconventional, energy-efficient design by architect Thom Mayne.
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C.
California Tower
California Tower is a historic Spanish-Colonial Revival bell tower and prominent architectural landmark located in Balboa Park, San Diego.
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D.
California Building in Balboa Park, San Diego
The California Building in Balboa Park, San Diego is a landmark early-20th-century structure renowned for its ornate tower and façade, which helped popularize Spanish Colonial Revival architecture in the United States.
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E.
Berkeley Landmark
Berkeley Landmark is a local historic designation in Berkeley, California, recognizing buildings, structures, and sites of significant architectural, cultural, or historical importance.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Cathedral of Saint Mary of the Assumption, San Francisco roof structure Target entity description: The Cathedral of Saint Mary of the Assumption roof structure in San Francisco is a landmark modernist concrete shell roof, celebrated for its innovative engineering and striking hyperbolic paraboloid form.
-
A.
San Francisco City Hall
San Francisco City Hall is a historic Beaux-Arts landmark in the city’s Civic Center, serving as the seat of government and a prominent architectural symbol of San Francisco.
-
B.
San Francisco Federal Building
The San Francisco Federal Building is a prominent contemporary government office tower in San Francisco known for its unconventional, energy-efficient design by architect Thom Mayne.
-
C.
California Tower
California Tower is a historic Spanish-Colonial Revival bell tower and prominent architectural landmark located in Balboa Park, San Diego.
-
D.
California Building in Balboa Park, San Diego
The California Building in Balboa Park, San Diego is a landmark early-20th-century structure renowned for its ornate tower and façade, which helped popularize Spanish Colonial Revival architecture in the United States.
-
E.
Berkeley Landmark
Berkeley Landmark is a local historic designation in Berkeley, California, recognizing buildings, structures, and sites of significant architectural, cultural, or historical importance.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
concrete shell roof
ⓘ
hyperbolic paraboloid roof ⓘ modernist roof structure ⓘ |
| aestheticQuality |
emphasis on pure geometric form
ⓘ
minimalist expression of structure ⓘ |
| architecturalStyle | Modernist architecture ⓘ |
| cladding | exposed concrete exterior ⓘ |
| constructionEra | 20th century ⓘ |
| culturalRole | symbol of postwar Catholic modernism in architecture ⓘ |
| designedFor | Roman Catholic cathedral ⓘ |
| engineeringSignificance |
efficient load distribution through double curvature
ⓘ
innovative use of hyperbolic paraboloid geometry ⓘ landmark in modern concrete shell design ⓘ |
| feature |
central skylight
ⓘ
cross-shaped plan in roof geometry ⓘ dramatic inward-curving surfaces ⓘ four identical curved shell segments ⓘ large-span column-free interior space ⓘ |
| function |
admits natural light through central opening
ⓘ
encloses main worship space ⓘ |
| geometryType |
doubly curved surface
ⓘ
ruled surface ⓘ |
| influencedBy | mid-20th-century shell engineering developments ⓘ |
| lightingFeature | central lantern-like opening at roof apex ⓘ |
| loadPath | shell action to perimeter supports ⓘ |
| locatedIn |
California
ⓘ
linked to:
California, United States
San Francisco ⓘ United States ⓘ
linked to:
United States of America
|
| material | reinforced concrete ⓘ |
| notableFor |
combination of religious symbolism and structural innovation
ⓘ
use of repetitive ruled lines to form complex curvature ⓘ |
| partOf | Cathedral of Saint Mary of the Assumption ⓘ |
| recognizedAs |
architectural landmark in San Francisco
ⓘ
iconic modern church roof ⓘ |
| roofPlanShape | square base with diagonally oriented shell ridges ⓘ |
| roofType |
fixed roof
ⓘ
non-metallic roof ⓘ |
| spanCharacteristic | long-span concrete shell ⓘ |
| structuralBehavior | membrane action in compression and tension ⓘ |
| structuralForm |
hyperbolic paraboloid
ⓘ
saddle-shaped surface ⓘ |
| structuralSystem | thin concrete shell ⓘ |
| visualEffect |
prominent city skyline presence
ⓘ
striking sculptural silhouette ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Cathedral of Saint Mary of the Assumption, San Francisco roof structure Description of subject: The Cathedral of Saint Mary of the Assumption roof structure in San Francisco is a landmark modernist concrete shell roof, celebrated for its innovative engineering and striking hyperbolic paraboloid form.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
Pier Luigi Nervi
→
designed
→
Cathedral of Saint Mary of the Assumption, San Francisco roof structure
ⓘ