James Buchanan
E16575
James Buchanan was the 15th president of the United States, whose ineffective leadership in the years just before the Civil War is widely criticized by historians.
All labels observed (2)
| Label | Occurrences |
|---|---|
| James Buchanan canonical | 43 |
| James Buchanan, 15th President of the United States | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13394 — 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: James Buchanan Context triple: [Abraham Lincoln, precededBy, James Buchanan]
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A.
Rutherford B. Hayes
Rutherford B. Hayes was the 19th president of the United States, known for overseeing the end of Reconstruction and the controversial 1876 election that marked a key moment in the Gilded Age.
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B.
Ulysses S. Grant
Ulysses S. Grant was the 18th president of the United States and a former Union Civil War general whose administration marked the early years of the Gilded Age.
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C.
James Madison
James Madison was the fourth president of the United States and a key architect of the U.S. Constitution and Bill of Rights.
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D.
Abraham Lincoln
Abraham Lincoln was the 16th president of the United States, best known for leading the country through the Civil War and issuing the Emancipation Proclamation that began the process of ending slavery.
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E.
Lincoln
Lincoln is a suburban town in eastern Massachusetts known for its conservation land, historic sites, and commuter access to Boston.
- 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: James Buchanan Target entity description: James Buchanan was the 15th president of the United States, whose ineffective leadership in the years just before the Civil War is widely criticized by historians.
-
A.
Rutherford B. Hayes
Rutherford B. Hayes was the 19th president of the United States, known for overseeing the end of Reconstruction and the controversial 1876 election that marked a key moment in the Gilded Age.
-
B.
Ulysses S. Grant
Ulysses S. Grant was the 18th president of the United States and a former Union Civil War general whose administration marked the early years of the Gilded Age.
-
C.
James Madison
James Madison was the fourth president of the United States and a key architect of the U.S. Constitution and Bill of Rights.
-
D.
Abraham Lincoln
Abraham Lincoln was the 16th president of the United States, best known for leading the country through the Civil War and issuing the Emancipation Proclamation that began the process of ending slavery.
-
E.
Lincoln
Lincoln is a suburban town in eastern Massachusetts known for its conservation land, historic sites, and commuter access to Boston.
- F. None of above. chosen
Statements (48)
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: James Buchanan Description of subject: James Buchanan was the 15th president of the United States, whose ineffective leadership in the years just before the Civil War is widely criticized by historians.
Referenced by (44)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Slave Power Controversy
subject surface form:
Harriet Lane
this entity surface form:
James Buchanan, 15th President of the United States