Saint-Clair-sur-Epte
E290023
King of West Francia
Viking leader
commune of France
founder of the Duchy of Normandy
historical region of France
treaty
Saint-Clair-sur-Epte is a commune in northern France, historically notable as the site of the 911 Treaty of Saint-Clair-sur-Epte between the Frankish king Charles the Simple and the Viking leader Rollo, which led to the creation of Normandy.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Saint-Clair-sur-Epte canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T2705682 — 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: Saint-Clair-sur-Epte Context triple: [Sinclair, hasToponymicOrigin, Saint-Clair-sur-Epte]
-
A.
Pacy-sur-Eure
Pacy-sur-Eure is a small commune in northern France’s Normandy region, known for its picturesque riverside setting and historic town center.
-
B.
Yvetot
Yvetot is a small town in the Seine-Maritime department of Normandy in northern France, historically known as the seat of a medieval "kingdom" within France.
-
C.
Eragny-sur-Epte
Eragny-sur-Epte is a rural French village in Normandy best known as the longtime home and artistic inspiration of Impressionist painter Camille Pissarro.
-
D.
Lisieux
Lisieux is a town and commune in the Calvados department of Normandy in northwestern France, known as a major Catholic pilgrimage site associated with Saint Thérèse of Lisieux.
-
E.
Louviers
Louviers is a historic town in northern France’s Normandy region, known for its medieval architecture and former textile industry.
- 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: Saint-Clair-sur-Epte Target entity description: Saint-Clair-sur-Epte is a commune in northern France, historically notable as the site of the 911 Treaty of Saint-Clair-sur-Epte between the Frankish king Charles the Simple and the Viking leader Rollo, which led to the creation of Normandy.
-
A.
Pacy-sur-Eure
Pacy-sur-Eure is a small commune in northern France’s Normandy region, known for its picturesque riverside setting and historic town center.
-
B.
Yvetot
Yvetot is a small town in the Seine-Maritime department of Normandy in northern France, historically known as the seat of a medieval "kingdom" within France.
-
C.
Eragny-sur-Epte
Eragny-sur-Epte is a rural French village in Normandy best known as the longtime home and artistic inspiration of Impressionist painter Camille Pissarro.
-
D.
Lisieux
Lisieux is a town and commune in the Calvados department of Normandy in northwestern France, known as a major Catholic pilgrimage site associated with Saint Thérèse of Lisieux.
-
E.
Louviers
Louviers is a historic town in northern France’s Normandy region, known for its medieval architecture and former textile industry.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
King of West Francia
ⓘ
Viking leader ⓘ commune of France ⓘ founder of the Duchy of Normandy ⓘ historical region of France ⓘ treaty ⓘ |
| alsoKnownAs |
Hrólfr
ⓘ
Robert ⓘ |
| appliesTo |
West Francia
ⓘ
surface form:
Kingdom of West Francia
Vikings in the lower Seine region ⓘ |
| concludedIn | 911 ⓘ |
| country | France ⓘ |
| createdBy | Treaty of Saint-Clair-sur-Epte ⓘ |
| dynasty | Carolingian dynasty ⓘ |
| elevationType | lowland commune ⓘ |
| hasGeographicFeature | Epte River ⓘ |
| hasHeritage | medieval fortifications (site of early Norman frontier) ⓘ |
| hasHistoricalEvent | negotiations between Franks and Vikings in 911 ⓘ |
| hasNameEtymology |
named after Saint Clair
ⓘ
suffix “sur-Epte” refers to location on the Epte River ⓘ |
| historicallyNotableFor | Treaty of Saint-Clair-sur-Epte ⓘ |
| historicalRole | border point between Normandy and the French royal domain ⓘ |
| INSEECODE | 95539 ⓘ |
| locatedIn |
Val-d'Oise
ⓘ
northern France ⓘ Île-de-France region ⓘ
surface form:
Île-de-France
|
| locatedInAdministrativeTerritorialEntity |
arrondissement of Pontoise
ⓘ
surface form:
Arrondissement of Pontoise
canton of Vauréal ⓘ
surface form:
Canton of Vauréal
|
| locatedInFormerRegion |
Île-de-France region
ⓘ
surface form:
Île-de-France (before 2016 regional reform)
|
| locatedInTime | France ⓘ |
| locatedOn | Epte River ⓘ |
| partOf | northwestern Île-de-France border area ⓘ |
| postalCode | 95770 ⓘ |
| receivedTitle | Duke of Normandy ⓘ |
| reign | 898–922 ⓘ |
| resultedIn |
creation of Normandy
ⓘ
grant of land in Neustria to Rollo ⓘ |
| signatory |
Charles the Simple
ⓘ
Rollo ⓘ |
| signedAt | Saint-Clair-sur-Epte self-linksurface differs ⓘ |
| timeZone |
Central European Summer Time
ⓘ
Central European Time ⓘ |
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: Saint-Clair-sur-Epte Description of subject: Saint-Clair-sur-Epte is a commune in northern France, historically notable as the site of the 911 Treaty of Saint-Clair-sur-Epte between the Frankish king Charles the Simple and the Viking leader Rollo, which led to the creation of Normandy.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Saint-Clair
subject surface form:
Treaty of Saint-Clair-sur-Epte