John II, Duke of Schleswig-Holstein-Sonderburg
E823100
John II, Duke of Schleswig-Holstein-Sonderburg, was a 16th-century Danish prince and nobleman who founded the Schleswig-Holstein-Sonderburg cadet branch of the House of Oldenburg.
All labels observed (1)
| Label | Occurrences |
|---|---|
| John II, Duke of Schleswig-Holstein-Sonderburg canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T9766674 — 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: John II, Duke of Schleswig-Holstein-Sonderburg Context triple: [Christian III of Denmark, child, John II, Duke of Schleswig-Holstein-Sonderburg]
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A.
Duke of Schleswig
The Duke of Schleswig was a noble title historically associated with the rulers of the duchy of Schleswig, a strategically important territory between Denmark and the German states.
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B.
John Augustus of Schleswig-Holstein-Sonderburg
John Augustus of Schleswig-Holstein-Sonderburg was a German nobleman of the House of Oldenburg who held ducal rank within the fragmented territories of early modern Schleswig-Holstein.
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C.
Duke John Albert of Mecklenburg
Duke John Albert of Mecklenburg was a German nobleman and member of the grand ducal house of Mecklenburg-Schwerin who held various military and political roles in the late 19th and early 20th centuries.
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D.
Ludvig Holstein
Ludvig Holstein was a Danish poet and writer associated with the late 19th-century Modern Breakthrough movement in Denmark.
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E.
Frederick IV, Duke of Holstein-Gottorp
Frederick IV, Duke of Holstein-Gottorp, was a late 17th- to early 18th-century German prince of the House of Holstein-Gottorp who ruled a duchy in the Holy Roman Empire and was closely connected by marriage to the Swedish royal family.
- 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: John II, Duke of Schleswig-Holstein-Sonderburg Target entity description: John II, Duke of Schleswig-Holstein-Sonderburg, was a 16th-century Danish prince and nobleman who founded the Schleswig-Holstein-Sonderburg cadet branch of the House of Oldenburg.
-
A.
Duke of Schleswig
The Duke of Schleswig was a noble title historically associated with the rulers of the duchy of Schleswig, a strategically important territory between Denmark and the German states.
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B.
John Augustus of Schleswig-Holstein-Sonderburg
John Augustus of Schleswig-Holstein-Sonderburg was a German nobleman of the House of Oldenburg who held ducal rank within the fragmented territories of early modern Schleswig-Holstein.
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C.
Duke John Albert of Mecklenburg
Duke John Albert of Mecklenburg was a German nobleman and member of the grand ducal house of Mecklenburg-Schwerin who held various military and political roles in the late 19th and early 20th centuries.
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D.
Ludvig Holstein
Ludvig Holstein was a Danish poet and writer associated with the late 19th-century Modern Breakthrough movement in Denmark.
-
E.
Frederick IV, Duke of Holstein-Gottorp
Frederick IV, Duke of Holstein-Gottorp, was a late 17th- to early 18th-century German prince of the House of Holstein-Gottorp who ruled a duchy in the Holy Roman Empire and was closely connected by marriage to the Swedish royal family.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
Danish prince
ⓘ
Duke ⓘ human ⓘ member of royalty ⓘ nobleman ⓘ |
| aristocraticTitleHolder | Duke ⓘ |
| centuryOfActivity | 16th century ⓘ |
| countryOfCitizenship | Denmark ⓘ |
| dynasticBranchFounded |
Schleswig-Holstein-Sonderburg branch
ⓘ
linked to:
Schleswig-Holstein-Sonderburg
|
| ethnicGroup | Danish ⓘ |
| founded | Schleswig-Holstein-Sonderburg cadet branch of the House of Oldenburg ⓘ |
| gender | male ⓘ |
| givenName | John ⓘ |
| house | Oldenburg ⓘ |
| memberOf | House of Oldenburg ⓘ |
| nobleFamily | House of Oldenburg ⓘ |
| nobleTitle | Duke of Schleswig-Holstein-Sonderburg ⓘ |
| notableFor | founding the Schleswig-Holstein-Sonderburg cadet branch ⓘ |
| placeOfActivity |
Schleswig-Holstein
ⓘ
Sonderburg ⓘ |
| positionHeld | Duke of Schleswig-Holstein-Sonderburg ⓘ |
| realm |
Duchy of Holstein
ⓘ
Duchy of Schleswig ⓘ |
| regnalNumber | II ⓘ |
| socialClass | nobility ⓘ |
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: John II, Duke of Schleswig-Holstein-Sonderburg Description of subject: John II, Duke of Schleswig-Holstein-Sonderburg, was a 16th-century Danish prince and nobleman who founded the Schleswig-Holstein-Sonderburg cadet branch of the House of Oldenburg.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
House of Schleswig-Holstein-Sonderburg
→
foundedBy
→
John II, Duke of Schleswig-Holstein-Sonderburg
ⓘ
House of Schleswig-Holstein-Sonderburg
→
notableMember
→
John II, Duke of Schleswig-Holstein-Sonderburg
ⓘ