Porta Nigra
E194642
Porta Nigra is a large, well-preserved Roman city gate in Trier, Germany, and one of the most famous surviving monuments of Roman architecture north of the Alps.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Porta Nigra canonical | 7 |
| Porta Nigra city gate | 1 |
| Roman city gate Porta Nigra | 1 |
| well-preserved Roman city gate (Porta Nigra) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1703928 — 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: Porta Nigra Context triple: [Augusta Treverorum, hasStructure, Porta Nigra]
-
A.
Hallesches Tor
Hallesches Tor is a major Berlin U-Bahn interchange station in the Kreuzberg district, serving as a key hub for multiple subway lines.
-
B.
Sandauer Tor
Sandauer Tor is a historic city gate in Landsberg am Lech, Germany, forming part of the town’s preserved medieval fortifications.
-
C.
Florian Gate
Florian Gate is a historic medieval city gate in Kraków, Poland, and one of the best-preserved remnants of the city’s old defensive walls.
-
D.
Nuremberg City Walls
The Nuremberg City Walls are a well-preserved medieval fortification system encircling Nuremberg’s historic old town, featuring towers, gates, and defensive structures.
-
E.
Nuremberg Castle
Nuremberg Castle is a historic medieval fortress complex overlooking the city of Nuremberg in Germany, renowned for its significant role in the Holy Roman Empire.
- 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: Porta Nigra Target entity description: Porta Nigra is a large, well-preserved Roman city gate in Trier, Germany, and one of the most famous surviving monuments of Roman architecture north of the Alps.
-
A.
Hallesches Tor
Hallesches Tor is a major Berlin U-Bahn interchange station in the Kreuzberg district, serving as a key hub for multiple subway lines.
-
B.
Sandauer Tor
Sandauer Tor is a historic city gate in Landsberg am Lech, Germany, forming part of the town’s preserved medieval fortifications.
-
C.
Florian Gate
Florian Gate is a historic medieval city gate in Kraków, Poland, and one of the best-preserved remnants of the city’s old defensive walls.
-
D.
Nuremberg City Walls
The Nuremberg City Walls are a well-preserved medieval fortification system encircling Nuremberg’s historic old town, featuring towers, gates, and defensive structures.
-
E.
Nuremberg Castle
Nuremberg Castle is a historic medieval fortress complex overlooking the city of Nuremberg in Germany, renowned for its significant role in the Holy Roman Empire.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Roman monument
ⓘ
UNESCO World Heritage Site component ⓘ ancient city gate ⓘ tourist attraction ⓘ |
| architecturalStyle | ancient Roman architecture ⓘ |
| associatedWith | Simeon of Trier ⓘ |
| builtBy | Romans ⓘ |
| category |
Ancient Roman buildings and structures in Germany
ⓘ
City gates in Germany ⓘ |
| color | dark gray ⓘ |
| constructionPeriod | circa 170–200 AD ⓘ |
| constructionStart | late 2nd century AD ⓘ |
| continent | Europe ⓘ |
| convertedToChurchInCentury | 11th century ⓘ |
| country | Germany ⓘ |
| hasHeritageStatus | well-preserved ⓘ |
| hasNameMeaning | Black Gate ⓘ |
| hasNearbySite |
Church of Our Lady, Trier
ⓘ
Imperial Baths of Trier ⓘ
surface form:
Roman Imperial Baths of Trier
cathedral complex of Trier ⓘ
surface form:
Trier Cathedral
|
| hasStructure |
flanking towers
ⓘ
twin passageways ⓘ two main stories ⓘ |
| heritageDesignation | UNESCO World Heritage Site ⓘ |
| languageOfName | Latin ⓘ |
| locatedIn |
historic region of Rhineland
ⓘ
Rhineland-Palatinate ⓘ
surface form:
state of Rhineland-Palatinate
|
| locatedInTime | Roman Empire ⓘ |
| locatedNorthOf | Alps ⓘ |
| locatedOn | northern edge of Roman Trier ⓘ |
| location | Trier ⓘ |
| managedBy | Generaldirektion Kulturelles Erbe Rheinland-Pfalz ⓘ |
| materialUsed | sandstone ⓘ |
| namedAfter | darkened stone color ⓘ |
| originalFunction |
city gate
ⓘ
fortified entrance ⓘ |
| ownedBy |
Rhineland-Palatinate
ⓘ
surface form:
state of Rhineland-Palatinate
|
| partOf |
UNESCO World Heritage Site (Roman Monuments, Cathedral of St Peter and Church of Our Lady in Trier)
ⓘ
surface form:
Roman Monuments, Cathedral of St Peter and Church of Our Lady in Trier
Roman city wall of Trier ⓘ |
| restorationCentury | 19th century ⓘ |
| restoredBy | Napoleon Bonaparte ⓘ |
| significance |
one of the best-preserved Roman city gates
ⓘ
one of the most famous Roman monuments north of the Alps ⓘ |
| touristAttractionIn | Trier ⓘ |
| UNESCOSiteId | 367 ⓘ |
| UNESCOWorldHeritageSiteSince | 1986 ⓘ |
| usedAs |
church
ⓘ
monastic complex ⓘ |
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: Porta Nigra Description of subject: Porta Nigra is a large, well-preserved Roman city gate in Trier, Germany, and one of the most famous surviving monuments of Roman architecture north of the Alps.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Porta Nigra city gate
this entity surface form:
Roman city gate Porta Nigra
UNESCO World Heritage Site (Roman Monuments, Cathedral of St Peter and Church of Our Lady in Trier)
→
includesSite
→
Porta Nigra
ⓘ
subject surface form:
Roman Monuments, Cathedral of St Peter and Church of Our Lady in Trier
UNESCO World Heritage Site (Roman Monuments, Cathedral of St Peter and Church of Our Lady in Trier)
→
notableFeature
→
Porta Nigra
ⓘ
subject surface form:
Roman Monuments, Cathedral of St Peter and Church of Our Lady in Trier
this entity surface form:
well-preserved Roman city gate (Porta Nigra)
subject surface form:
Amphitheatre of Trier