opus caementicium
E223914
Opus caementicium is the durable ancient Roman concrete that enabled the construction of large-scale structures like domes, vaults, and harbors.
All labels observed (1)
| Label | Occurrences |
|---|---|
| opus caementicium canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1972916 — 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: opus caementicium Context triple: [Roman concrete, alsoKnownAs, opus caementicium]
-
A.
Ancylus fluviatilis
Ancylus fluviatilis is a small freshwater limpet-like snail (an aquatic gastropod mollusk) commonly found in European rivers and streams.
-
B.
Aeolid
An Aeolid is a descendant of Aeolus in Greek mythology, belonging to a legendary family line often associated with kings and heroes.
-
C.
Tonna
Tonna is a village and community in Neath Port Talbot, South Wales, known for its residential character and proximity to the town of Neath.
-
D.
Anesidora
Anesidora is an epithet of the Greek goddess Demeter that emphasizes her role as the giver of gifts, especially the bounty of the earth.
-
E.
Cyclomedusa
Cyclomedusa is a disc-shaped fossil organism from the Ediacaran period, interpreted as part of the early complex multicellular life that preceded the Cambrian explosion.
- 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: opus caementicium Target entity description: Opus caementicium is the durable ancient Roman concrete that enabled the construction of large-scale structures like domes, vaults, and harbors.
-
A.
Ancylus fluviatilis
Ancylus fluviatilis is a small freshwater limpet-like snail (an aquatic gastropod mollusk) commonly found in European rivers and streams.
-
B.
Aeolid
An Aeolid is a descendant of Aeolus in Greek mythology, belonging to a legendary family line often associated with kings and heroes.
-
C.
Tonna
Tonna is a village and community in Neath Port Talbot, South Wales, known for its residential character and proximity to the town of Neath.
-
D.
Anesidora
Anesidora is an epithet of the Greek goddess Demeter that emphasizes her role as the giver of gifts, especially the bounty of the earth.
-
E.
Cyclomedusa
Cyclomedusa is a disc-shaped fossil organism from the Ediacaran period, interpreted as part of the early complex multicellular life that preceded the Cambrian explosion.
- F. None of above. chosen
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
Roman concrete
ⓘ
ancient building material ⓘ |
| category |
Roman building techniques
ⓘ
concrete ⓘ |
| comparedTo | modern Portland cement concrete ⓘ |
| constructionTechnique |
cast in wooden formwork
ⓘ
faced with brick or stone masonry ⓘ |
| contains |
aggregate
ⓘ
brick fragments ⓘ lime mortar ⓘ pozzolanic material ⓘ pumice ⓘ stone rubble ⓘ tuff ⓘ volcanic ash ⓘ |
| countryOfOrigin |
Ancient Rome
ⓘ
linked to:
Roman Antiquity
|
| developedBy |
ancient Romans
ⓘ
linked to:
Romans
|
| durabilityEvidence | surviving Roman marine structures ⓘ |
| enabledConstructionOf |
large vaults
ⓘ
large-span domes ⓘ massive concrete platforms ⓘ |
| hasAdvantageOver | plain lime mortar ⓘ |
| hasProperty |
capable of hardening under water
ⓘ
durable ⓘ hydraulic ⓘ slow-setting ⓘ strong in compression ⓘ |
| latinNameMeaning | rubble work ⓘ |
| mainBinder |
lime
ⓘ
pozzolana ⓘ |
| mixtureOf |
aggregates
ⓘ
lime ⓘ pozzolana ⓘ water ⓘ |
| notableExampleStructure |
Colosseum in Rome
ⓘ
linked to:
Colosseum
Pantheon in Rome ⓘ
linked to:
Pantheon
Roman aqueducts ⓘ Roman harbors in the Mediterranean ⓘ |
| relatedTo |
Roman engineering
ⓘ
pozzolanic reaction ⓘ |
| timePeriodOfUse |
Roman Empire
ⓘ
Roman Republic ⓘ |
| usedFor |
aqueducts
ⓘ
arches ⓘ domes ⓘ foundations ⓘ harbor structures ⓘ massive walls ⓘ monumental buildings ⓘ vaults ⓘ |
| usedIn | ancient Roman architecture ⓘ |
| usedSinceCentury | 3rd century BCE ⓘ |
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: opus caementicium Description of subject: Opus caementicium is the durable ancient Roman concrete that enabled the construction of large-scale structures like domes, vaults, and harbors.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.