Aqua Traiana aqueduct
E440201
The Aqua Traiana aqueduct was an ancient Roman water supply system built under Emperor Trajan to bring water from sources near Lake Bracciano to the city of Rome.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Aqua Traiana aqueduct canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4436365 — 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: Aqua Traiana aqueduct Context triple: [Fontana dell'Acqua Paola, dedicatedTo, Aqua Traiana aqueduct]
-
A.
Aqua Virgo aqueduct
The Aqua Virgo aqueduct is an ancient Roman waterway, completed in 19 BCE under Augustus, that has long supplied water to central Rome, including the Trevi Fountain.
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B.
Aqua Paola aqueduct
The Aqua Paola aqueduct is a 17th-century Roman aqueduct and monumental fountain system that restored an ancient water supply to the city, culminating in the grand Fontana dell’Acqua Paola on the Janiculum Hill.
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C.
Acqua Felice aqueduct
The Acqua Felice aqueduct is a late 16th-century Roman aqueduct restored under Pope Sixtus V to bring fresh water back into the city, feeding several monumental fountains.
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D.
Valens Aqueduct
The Valens Aqueduct is a late Roman-era aqueduct in Istanbul, Turkey, that once formed a key part of the city’s water supply system and remains a prominent historic landmark.
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E.
Espada Aqueduct
Espada Aqueduct is a historic 18th-century stone irrigation structure in San Antonio, Texas, built by Spanish missionaries to supply water to Mission Espada and its surrounding farmlands.
- 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: Aqua Traiana aqueduct Target entity description: The Aqua Traiana aqueduct was an ancient Roman water supply system built under Emperor Trajan to bring water from sources near Lake Bracciano to the city of Rome.
-
A.
Aqua Virgo aqueduct
The Aqua Virgo aqueduct is an ancient Roman waterway, completed in 19 BCE under Augustus, that has long supplied water to central Rome, including the Trevi Fountain.
-
B.
Aqua Paola aqueduct
The Aqua Paola aqueduct is a 17th-century Roman aqueduct and monumental fountain system that restored an ancient water supply to the city, culminating in the grand Fontana dell’Acqua Paola on the Janiculum Hill.
-
C.
Acqua Felice aqueduct
The Acqua Felice aqueduct is a late 16th-century Roman aqueduct restored under Pope Sixtus V to bring fresh water back into the city, feeding several monumental fountains.
-
D.
Valens Aqueduct
The Valens Aqueduct is a late Roman-era aqueduct in Istanbul, Turkey, that once formed a key part of the city’s water supply system and remains a prominent historic landmark.
-
E.
Espada Aqueduct
Espada Aqueduct is a historic 18th-century stone irrigation structure in San Antonio, Texas, built by Spanish missionaries to supply water to Mission Espada and its surrounding farmlands.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
ancient Roman aqueduct
ⓘ
aqueduct ⓘ |
| builder | Trajan NERFINISHED ⓘ |
| builtDuringReignOf | Trajan NERFINISHED ⓘ |
| category |
Ancient Roman buildings and structures in Rome
ⓘ
Roman aqueducts in Italy ⓘ |
| connectedTo | mills complex on the Janiculum ⓘ |
| constructionStart | early 2nd century AD ⓘ |
| country | Ancient Rome NERFINISHED ⓘ |
| endPoint | Rome NERFINISHED ⓘ |
| enteredCityAt | Janiculum Hill NERFINISHED ⓘ |
| era | Imperial Roman period ⓘ |
| hadTerminusAt |
Trastevere
NERFINISHED
ⓘ
area of modern Fontana dell’Acqua Paola ⓘ |
| hasLatinName | Aqua Traiana NERFINISHED ⓘ |
| historicalFunction |
power source for water mills
ⓘ
urban water supply ⓘ |
| inaugurationDate | 109 AD ⓘ |
| influenced | layout of later Acqua Paola aqueduct ⓘ |
| languageOfName | Latin ⓘ |
| lengthApprox | about 57 km ⓘ |
| locatedIn |
Italy
ⓘ
Rome ⓘ |
| locatedInRegion | Lazio NERFINISHED ⓘ |
| locatedNear | Lake Bracciano NERFINISHED ⓘ |
| majorRestorationBy | Pope Paul V NERFINISHED ⓘ |
| majorRestorationDate | early 17th century ⓘ |
| namedAfter | Trajan NERFINISHED ⓘ |
| partiallyReusedBy | Acqua Paola aqueduct NERFINISHED ⓘ |
| partOf | ancient Roman water supply system of Rome ⓘ |
| restoredAs | Acqua Paola NERFINISHED ⓘ |
| routeFeature |
bridges
ⓘ
tunnels ⓘ underground conduits ⓘ |
| significance | one of the major aqueducts built under Trajan ⓘ |
| startPoint |
Sabatinus Lacus region
ⓘ
sources near Lake Bracciano ⓘ |
| status | partially preserved ⓘ |
| supplied |
fountains in Rome
ⓘ
industrial mills on the Janiculum ⓘ public baths in Rome ⓘ |
| waterDestination |
Janiculum Hill
NERFINISHED
ⓘ
Trastevere NERFINISHED ⓘ Vatican area ⓘ |
| waterSource |
springs around Lake Bracciano
ⓘ
springs near Manziana ⓘ springs near Vicarello ⓘ |
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: Aqua Traiana aqueduct Description of subject: The Aqua Traiana aqueduct was an ancient Roman water supply system built under Emperor Trajan to bring water from sources near Lake Bracciano to the city of Rome.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.