Pieter Lassen
E178728
Pieter Lassen was a 19th-century Danish-American frontiersman and guide known for leading settlers to California and lending his name to several geographic features, including Lassen Peak.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Pieter Lassen canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T1582274 — 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: Pieter Lassen Context triple: [Lassen Peak, namedAfter, Pieter Lassen]
-
A.
Johan Henrik Nebelong
Johan Henrik Nebelong was a 19th-century Danish architect known for his historicist designs and contributions to royal and public buildings in Scandinavia.
-
B.
Nicolaas Pierson
Nicolaas Pierson was a Dutch liberal politician and economist who served as Prime Minister of the Netherlands at the turn of the 20th century.
-
C.
Herman Saftleven
Herman Saftleven was a 17th-century Dutch painter and draughtsman known for his detailed river landscapes and topographical views.
-
D.
Knut Pedersen
Knut Pedersen, better known by his pen name Knut Hamsun, was a Norwegian novelist and Nobel Prize laureate renowned for his influential modernist works such as "Hunger" and "Growth of the Soil."
-
E.
Gunnar Wejke
Gunnar Wejke was a Swedish architect known for co-designing major public buildings, including the multi-purpose arena Scandinavium in Gothenburg.
- 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: Pieter Lassen Target entity description: Pieter Lassen was a 19th-century Danish-American frontiersman and guide known for leading settlers to California and lending his name to several geographic features, including Lassen Peak.
-
A.
Johan Henrik Nebelong
Johan Henrik Nebelong was a 19th-century Danish architect known for his historicist designs and contributions to royal and public buildings in Scandinavia.
-
B.
Nicolaas Pierson
Nicolaas Pierson was a Dutch liberal politician and economist who served as Prime Minister of the Netherlands at the turn of the 20th century.
-
C.
Herman Saftleven
Herman Saftleven was a 17th-century Dutch painter and draughtsman known for his detailed river landscapes and topographical views.
-
D.
Knut Pedersen
Knut Pedersen, better known by his pen name Knut Hamsun, was a Norwegian novelist and Nobel Prize laureate renowned for his influential modernist works such as "Hunger" and "Growth of the Soil."
-
E.
Gunnar Wejke
Gunnar Wejke was a Swedish architect known for co-designing major public buildings, including the multi-purpose arena Scandinavium in Gothenburg.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
emigrant
ⓘ
explorer ⓘ frontiersman ⓘ person ⓘ pioneer ⓘ |
| causeOfDeath | killed ⓘ |
| centuryOfActivity | 19th century ⓘ |
| continentOfBirth | Europe ⓘ |
| continentOfDeath | North America ⓘ |
| countryOfCitizenship |
Denmark
ⓘ
United States of America ⓘ |
| emigratedFrom | Denmark ⓘ |
| emigratedTo | United States of America ⓘ |
| ethnicGroup | Danish ⓘ |
| familyName |
Lassen
ⓘ
linked to:
Lassen Peak
|
| fieldOfWork |
California Trail exploration
ⓘ
overland migration guidance ⓘ |
| givenName | Pieter ⓘ |
| hasAssociatedPlace |
Lassen County, California
ⓘ
linked to:
Lassen County
Lassen Peak ⓘ Lassen Volcanic National Park ⓘ |
| hasAssociatedTrail |
Lassen Cutoff
ⓘ
linked to:
Applegate–Lassen Route
|
| hasNameInLanguage |
Peder Lassen
ⓘ
Peter Lassen ⓘ |
| languageSpoken |
Danish
ⓘ
English ⓘ |
| notableEvent | led wagon trains along the Lassen Cutoff to California ⓘ |
| notableFor |
Lassen Cutoff of the California Trail
ⓘ
linked to:
Applegate–Lassen Route
early settlement in northern California ⓘ guiding settlers to California ⓘ having Lassen County named after him ⓘ having Lassen Peak named after him ⓘ |
| occupation |
explorer
ⓘ
frontiersman ⓘ guide ⓘ rancher ⓘ |
| participatedIn | westward expansion of the United States ⓘ |
| placeOfBirth | Farum, Denmark ⓘ |
| placeOfDeath | near Yreka, California ⓘ |
| residence |
Sacramento Valley, California
ⓘ
linked to:
Sacramento Valley
northern California frontier ⓘ |
| sexOrGender | male ⓘ |
| workLocation |
Lassen County region
ⓘ
linked to:
Lassen County
Sacramento Valley ⓘ northern California ⓘ
linked to:
Northern California
|
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: Pieter Lassen Description of subject: Pieter Lassen was a 19th-century Danish-American frontiersman and guide known for leading settlers to California and lending his name to several geographic features, including Lassen Peak.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.