Bohemian sandstone
E287416
Bohemian sandstone is a durable, locally quarried sedimentary rock from the Bohemia region, historically used in many notable Central European buildings and monuments.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Bohemian sandstone canonical | 1 |
| Bohemian sandstone formations | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2683383 — 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: Bohemian sandstone Context triple: [Charles Bridge, materialUsed, Bohemian sandstone]
-
A.
Bath stone
Bath stone is a honey-colored oolitic limestone from the Bath area of England, historically prized as a building material for its warm appearance and ease of carving.
-
B.
Cotswold stone
Cotswold stone is a warm, honey-colored limestone traditionally quarried in the Cotswolds region of England and widely used for its distinctive appearance in local architecture.
-
C.
Tura limestone
Tura limestone is a fine white Egyptian limestone historically prized for its high quality and used as the outer casing stone for major monuments such as the Great Pyramid of Giza.
-
D.
Lioz limestone
Lioz limestone is a dense, decorative Portuguese limestone widely used in historic architecture and monuments, especially in and around Lisbon.
-
E.
Hallowell granite
Hallowell granite is a durable, fine-grained granite historically quarried in Hallowell, Maine, widely used in prominent public buildings and monuments in the United States.
- 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: Bohemian sandstone Target entity description: Bohemian sandstone is a durable, locally quarried sedimentary rock from the Bohemia region, historically used in many notable Central European buildings and monuments.
-
A.
Bath stone
Bath stone is a honey-colored oolitic limestone from the Bath area of England, historically prized as a building material for its warm appearance and ease of carving.
-
B.
Cotswold stone
Cotswold stone is a warm, honey-colored limestone traditionally quarried in the Cotswolds region of England and widely used for its distinctive appearance in local architecture.
-
C.
Tura limestone
Tura limestone is a fine white Egyptian limestone historically prized for its high quality and used as the outer casing stone for major monuments such as the Great Pyramid of Giza.
-
D.
Lioz limestone
Lioz limestone is a dense, decorative Portuguese limestone widely used in historic architecture and monuments, especially in and around Lisbon.
-
E.
Hallowell granite
Hallowell granite is a durable, fine-grained granite historically quarried in Hallowell, Maine, widely used in prominent public buildings and monuments in the United States.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
building stone
ⓘ
natural stone ⓘ sedimentary rock ⓘ |
| category |
Bohemia
ⓘ
Building stone ⓘ Sandstone in the Czech Republic ⓘ |
| cementType |
calcareous
ⓘ
siliceous ⓘ |
| color |
brownish
ⓘ
light grey ⓘ yellowish ⓘ |
| composition |
clay minerals
ⓘ
feldspar ⓘ quartz ⓘ |
| country | Czech Republic ⓘ |
| culturalSignificance | traditional regional building material ⓘ |
| durability | high ⓘ |
| environmentOfFormation |
deltaic
ⓘ
shallow marine ⓘ |
| geologicalPeriod |
Cretaceous
ⓘ
Mesozoic ⓘ
linked to:
Mesozoic Era
|
| hasProperty |
easily workable when freshly quarried
ⓘ
hardens on exposure to air ⓘ |
| locatedIn | Bohemia ⓘ |
| notableUse |
castle architecture
ⓘ
church architecture ⓘ historic buildings in Prague ⓘ |
| partOf | Bohemian Massif ⓘ |
| permeability | high ⓘ |
| porosity | high ⓘ |
| quarriedIn |
Czech Republic
ⓘ
Germany ⓘ |
| region |
Central Bohemia
ⓘ
linked to:
Central Bohemian Region
Northern Bohemia ⓘ
linked to:
North Bohemia
|
| rockType | sandstone ⓘ |
| source | local quarries ⓘ |
| texture | clastic ⓘ |
| usedFor |
bridges
ⓘ
building construction ⓘ facades ⓘ monuments ⓘ paving ⓘ sculpture ⓘ |
| usedIn | Central Europe ⓘ |
| usedSince | Middle Ages ⓘ |
| weatherResistance | good ⓘ |
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: Bohemian sandstone Description of subject: Bohemian sandstone is a durable, locally quarried sedimentary rock from the Bohemia region, historically used in many notable Central European buildings and monuments.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Bohemian sandstone