James M. Mason
E952361
James M. Mason was a 19th-century American politician and Confederate diplomat best known for his role in the Trent Affair during the U.S. Civil War.
All labels observed (1)
| Label | Occurrences |
|---|---|
| James M. Mason canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11896095 — 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 M. Mason Context triple: [Fort Warren, notablePrisonerHeld, James M. Mason]
-
A.
James Duke Mason
James Duke Mason is an American writer, LGBTQ+ activist, and political advocate, known in part as the son of singer Belinda Carlisle.
-
B.
Joseph Holt
Joseph Holt was an Irish rebel leader and guerrilla commander who played a prominent role in the 1798 uprising against British rule.
-
C.
Joseph Holt
Joseph Holt was an American lawyer and politician who served as a key member of President Abraham Lincoln’s administration, notably as Judge Advocate General of the U.S. Army during the Civil War.
-
D.
Joseph Borden McKean
Joseph Borden McKean was an American lawyer and jurist who served as Attorney General of Pennsylvania in the early 19th century.
-
E.
James H. R. Cromwell
James H. R. Cromwell was an American diplomat and politician who served as U.S. Ambassador to Canada and was notably married to heiress Doris Duke.
- 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 M. Mason Target entity description: James M. Mason was a 19th-century American politician and Confederate diplomat best known for his role in the Trent Affair during the U.S. Civil War.
-
A.
James Duke Mason
James Duke Mason is an American writer, LGBTQ+ activist, and political advocate, known in part as the son of singer Belinda Carlisle.
-
B.
Joseph Holt
Joseph Holt was an Irish rebel leader and guerrilla commander who played a prominent role in the 1798 uprising against British rule.
-
C.
Joseph Holt
Joseph Holt was an American lawyer and politician who served as a key member of President Abraham Lincoln’s administration, notably as Judge Advocate General of the U.S. Army during the Civil War.
-
D.
Joseph Borden McKean
Joseph Borden McKean was an American lawyer and jurist who served as Attorney General of Pennsylvania in the early 19th century.
-
E.
James H. R. Cromwell
James H. R. Cromwell was an American diplomat and politician who served as U.S. Ambassador to Canada and was notably married to heiress Doris Duke.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Confederate diplomat
ⓘ
diplomat ⓘ human ⓘ politician ⓘ |
| admittedToBar | Virginia NERFINISHED ⓘ |
| burialPlace | Christ Church Episcopal Cemetery, Alexandria, Virginia NERFINISHED ⓘ |
| causeOfEndOfSenateService | secession of Virginia from the Union ⓘ |
| countryOfCitizenship | United States of America ⓘ |
| dateOfBirth | 1798-11-03 ⓘ |
| dateOfDeath | 1871-04-28 ⓘ |
| educatedAt |
College of William & Mary
NERFINISHED
ⓘ
University of Pennsylvania ⓘ |
| endTime (U.S. Senate service) | 1861 ⓘ |
| ethnicGroup | American ⓘ |
| familyName | Mason NERFINISHED ⓘ |
| father | John Mason NERFINISHED ⓘ |
| fieldOfWork |
diplomacy
ⓘ
law ⓘ politics ⓘ |
| givenName | James ⓘ |
| grandfather | George Mason NERFINISHED ⓘ |
| ideology | pro-slavery ⓘ |
| legalEducation | read law ⓘ |
| memberOf | Confederate States of America diplomatic corps NERFINISHED ⓘ |
| memberOfPoliticalParty |
Democratic Party
ⓘ
surface form:
Democratic Party (United States)
|
| name | James M. Mason NERFINISHED ⓘ |
| notableEvent | Trent Affair NERFINISHED ⓘ |
| notableFamily | Mason family of Virginia NERFINISHED ⓘ |
| notableFor | role in the Trent Affair ⓘ |
| notableWork | Fugitive Slave Act enforcement advocacy ⓘ |
| occupation |
diplomat
ⓘ
lawyer ⓘ politician ⓘ |
| participantIn | American Civil War NERFINISHED ⓘ |
| placeOfBirth | Georgetown, District of Columbia NERFINISHED ⓘ |
| placeOfDeath | Alexandria, Virginia NERFINISHED ⓘ |
| positionHeld |
Chair of the United States Senate Committee on Foreign Relations
ⓘ
Confederate commissioner to Great Britain NERFINISHED ⓘ Member of the United States House of Representatives ⓘ United States Senator ⓘ |
| religion | Episcopal Church ⓘ |
| represented | Virginia NERFINISHED ⓘ |
| representedInCongress | Virginia's 12th congressional district NERFINISHED ⓘ |
| residence |
Alexandria, Virginia
NERFINISHED
ⓘ
Winchester, Virginia NERFINISHED ⓘ |
| sexOrGender | male ⓘ |
| sideInConflict | Confederate States of America NERFINISHED ⓘ |
| startTime (U.S. Senate service) | 1847 ⓘ |
| workLocation | Washington, D.C. ⓘ |
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 M. Mason Description of subject: James M. Mason was a 19th-century American politician and Confederate diplomat best known for his role in the Trent Affair during the U.S. Civil War.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.