Basilica of St. Castor
E727030
Roman Catholic church
Romanesque church building
basilica minor
cultural heritage monument in Rhineland-Palatinate
landmark in Koblenz
The Basilica of St. Castor is a Romanesque Catholic church in Koblenz, Germany, renowned as the city’s oldest surviving church and a significant historical and architectural landmark.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Basilica of St. Castor canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T8346471 — 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: Basilica of St. Castor Context triple: [Koblenz, hasLandmark, Basilica of St. Castor]
-
A.
Basilica of St. Mary and the Martyrs
The Basilica of St. Mary and the Martyrs, better known as the Pantheon in Rome, is an ancient Roman temple converted into a Catholic church and renowned for its vast domed rotunda and central oculus.
-
B.
Basilica of Saint Lawrence
The Basilica of Saint Lawrence is a historic Roman Catholic church in Asheville, North Carolina, renowned for its distinctive Spanish Renaissance architecture and one of the largest freestanding elliptical domes in North America.
-
C.
Basilica of Our Lady
The Basilica of Our Lady is a prominent Romanesque Catholic church and pilgrimage site in Maastricht, Netherlands, renowned for its fortress-like appearance and veneration of the Virgin Mary.
-
D.
Basilica of Saint Martin
The Basilica of Saint Martin is a historic Roman Catholic church in Halle, Belgium, renowned for its Gothic architecture and status as a major Marian pilgrimage site.
-
E.
Basilica of Saint Martin
The Basilica of Saint Martin is a prominent Roman Catholic church in Tours, France, built to honor Saint Martin of Tours and serving as an important site of Christian pilgrimage and heritage.
- 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: Basilica of St. Castor Target entity description: The Basilica of St. Castor is a Romanesque Catholic church in Koblenz, Germany, renowned as the city’s oldest surviving church and a significant historical and architectural landmark.
-
A.
Basilica of St. Mary and the Martyrs
The Basilica of St. Mary and the Martyrs, better known as the Pantheon in Rome, is an ancient Roman temple converted into a Catholic church and renowned for its vast domed rotunda and central oculus.
-
B.
Basilica of Saint Lawrence
The Basilica of Saint Lawrence is a historic Roman Catholic church in Asheville, North Carolina, renowned for its distinctive Spanish Renaissance architecture and one of the largest freestanding elliptical domes in North America.
-
C.
Basilica of Our Lady
The Basilica of Our Lady is a prominent Romanesque Catholic church and pilgrimage site in Maastricht, Netherlands, renowned for its fortress-like appearance and veneration of the Virgin Mary.
-
D.
Basilica of Saint Martin
The Basilica of Saint Martin is a historic Roman Catholic church in Halle, Belgium, renowned for its Gothic architecture and status as a major Marian pilgrimage site.
-
E.
Basilica of Saint Martin
The Basilica of Saint Martin is a prominent Roman Catholic church in Tours, France, built to honor Saint Martin of Tours and serving as an important site of Christian pilgrimage and heritage.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Roman Catholic church
ⓘ
Romanesque church building ⓘ basilica minor ⓘ cultural heritage monument in Rhineland-Palatinate ⓘ landmark in Koblenz ⓘ |
| architecturalStyle | Romanesque architecture ⓘ |
| architecturalType | basilica ⓘ |
| belongsTo |
Roman Catholic Church in Germany
ⓘ
linked to:
Catholic Church in Germany
|
| consecrationYear | 836 ⓘ |
| constructionStart | circa 817 ⓘ |
| country | Germany ⓘ |
| denomination |
Roman Catholic Church
ⓘ
linked to:
Roman Catholicism
|
| diocese | Roman Catholic Diocese of Trier ⓘ |
| elevationToBasilicaMinor | 1991 ⓘ |
| floorPlanType | basilican ground plan ⓘ |
| foundingDate | 9th century ⓘ |
| hasAdjacentStructure | Kastorbrunnen (Castor Fountain) ⓘ |
| hasBellTower | westwork with twin towers ⓘ |
| hasCemetery | historic churchyard (no longer primary burial site) ⓘ |
| hasFeature |
Gothic and Baroque interior elements
ⓘ
Romanesque frescoes (remnants) ⓘ apse ⓘ crossing tower ⓘ crypt ⓘ three-aisled basilica nave ⓘ |
| hasOrgan | pipe organ ⓘ |
| hasParish | St. Castor parish ⓘ |
| heritageDesignation | UNESCO World Heritage Site component ⓘ |
| languageOfLiturgy |
German
ⓘ
Latin ⓘ |
| locatedIn |
Koblenz
ⓘ
Old Town of Koblenz ⓘ Rhineland-Palatinate ⓘ |
| locatedNear |
Deutsches Eck
ⓘ
confluence of the Rhine and Moselle rivers ⓘ |
| material | stone ⓘ |
| namedAfter | Saint Castor of Karden ⓘ |
| oldestChurchIn | Koblenz ⓘ |
| partOf | Upper Middle Rhine Valley UNESCO World Heritage Site ⓘ |
| protectedAs | listed building ⓘ |
| roofMaterial | slate ⓘ |
| significantEvent |
negotiations related to the Treaty of Verdun
ⓘ
site of imperial meetings in the Middle Ages ⓘ |
| touristAttraction | yes ⓘ |
| usedFor |
Catholic liturgy
ⓘ
concerts and cultural events ⓘ parish church functions ⓘ |
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: Basilica of St. Castor Description of subject: The Basilica of St. Castor is a Romanesque Catholic church in Koblenz, Germany, renowned as the city’s oldest surviving church and a significant historical and architectural landmark.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.