Sybrand van Haersma Buma
E412064
Sybrand van Haersma Buma is a Dutch politician who has served as a prominent leader within the Christian Democratic Appeal (CDA) and as a key figure in national politics in the Netherlands.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sybrand van Haersma Buma canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T3979947 — 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: Sybrand van Haersma Buma Context triple: [Leader of the Christian Democratic Appeal, notableOfficeHolder, Sybrand van Haersma Buma]
-
A.
Hendrik de Vries
Hendrik de Vries was a mathematician who supervised and mentored the influential algebraist Bartel Leendert van der Waerden.
-
B.
Laurens Jan Brinkhorst
Laurens Jan Brinkhorst is a Dutch politician and diplomat from the Democrats 66 (D66) party who has served as a government minister and European Commissioner.
-
C.
Dirk Jan de Geer
Dirk Jan de Geer was a Dutch politician who served twice as Prime Minister of the Netherlands, most notably during the early years of World War II.
-
D.
Dominie Hendrik Scholte
Dominie Hendrik Scholte was a 19th-century Dutch religious leader and founder of the Dutch immigrant settlement in Pella, Iowa, known for his role in leading a group of seceders from the Dutch Reformed Church to America.
-
E.
Barend Biesheuvel
Barend Biesheuvel was a Dutch politician of the Anti-Revolutionary Party who served as Prime Minister of the Netherlands from 1971 to 1973.
- 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: Sybrand van Haersma Buma Target entity description: Sybrand van Haersma Buma is a Dutch politician who has served as a prominent leader within the Christian Democratic Appeal (CDA) and as a key figure in national politics in the Netherlands.
-
A.
Hendrik de Vries
Hendrik de Vries was a mathematician who supervised and mentored the influential algebraist Bartel Leendert van der Waerden.
-
B.
Laurens Jan Brinkhorst
Laurens Jan Brinkhorst is a Dutch politician and diplomat from the Democrats 66 (D66) party who has served as a government minister and European Commissioner.
-
C.
Dirk Jan de Geer
Dirk Jan de Geer was a Dutch politician who served twice as Prime Minister of the Netherlands, most notably during the early years of World War II.
-
D.
Dominie Hendrik Scholte
Dominie Hendrik Scholte was a 19th-century Dutch religious leader and founder of the Dutch immigrant settlement in Pella, Iowa, known for his role in leading a group of seceders from the Dutch Reformed Church to America.
-
E.
Barend Biesheuvel
Barend Biesheuvel was a Dutch politician of the Anti-Revolutionary Party who served as Prime Minister of the Netherlands from 1971 to 1973.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
Dutch politician
ⓘ
human ⓘ mayor ⓘ |
| countryOfCitizenship |
Kingdom of the Netherlands
ⓘ
Netherlands ⓘ |
| dateOfBirth | 1965-07-30 ⓘ |
| describedBySource |
Dutch parliamentary records
ⓘ
official website of the municipality of Leeuwarden ⓘ |
| educatedAt | University of Groningen ⓘ |
| familyName | van Haersma Buma ⓘ |
| fieldOfStudy | law ⓘ |
| givenName | Sybrand ⓘ |
| hasEthnicGroup | Frisian ⓘ |
| hasRelative | Buma family ⓘ |
| isPartOf |
House of Representatives of the Netherlands
ⓘ
municipality of Leeuwarden ⓘ |
| memberOfPoliticalParty | Christian Democratic Appeal ⓘ |
| name | Sybrand van Haersma Buma ⓘ |
| nativeLanguage | Dutch ⓘ |
| notableWork |
leadership of the CDA in the 2012 Dutch general election
ⓘ
leadership of the CDA in the 2017 Dutch general election ⓘ |
| occupation |
jurist
ⓘ
politician ⓘ |
| officeEndTime |
2019-05-21
ⓘ
2019-07-09 ⓘ |
| officeStartTime |
2002-05-23
ⓘ
2010-10-14 ⓘ 2012-10-01 ⓘ 2019-08-26 ⓘ |
| parliamentaryGroup | Christian Democratic Appeal ⓘ |
| placeOfBirth |
Friesland
ⓘ
Netherlands ⓘ Workum ⓘ |
| politicalAlignment |
Christian democracy
ⓘ
centre-right politics ⓘ |
| positionHeld |
leader of the Christian Democratic Appeal
ⓘ
mayor of Leeuwarden ⓘ member of the House of Representatives of the Netherlands ⓘ parliamentary leader of the Christian Democratic Appeal in the House of Representatives ⓘ |
| religion |
Protestant Church in the Netherlands
ⓘ
Protestantism ⓘ
linked to:
Protestant Christianity
|
| residence | Leeuwarden ⓘ |
| sexOrGender | male ⓘ |
| workLocation |
Leeuwarden
ⓘ
The Hague ⓘ |
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: Sybrand van Haersma Buma Description of subject: Sybrand van Haersma Buma is a Dutch politician who has served as a prominent leader within the Christian Democratic Appeal (CDA) and as a key figure in national politics in the Netherlands.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.