John B. McDonald
E224248
John B. McDonald was an American civil engineer best known for overseeing the construction of New York City's first subway system.
All labels observed (1)
| Label | Occurrences |
|---|---|
| John B. McDonald canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T840604 — 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 B. McDonald Context triple: [Interborough Rapid Transit Company, foundedBy, John B. McDonald]
-
A.
John H. Ferguson
John H. Ferguson was the Louisiana judge whose ruling upholding racial segregation in the Plessy v. Ferguson case led to the U.S. Supreme Court’s landmark “separate but equal” decision.
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B.
Henry F. Keyes
Henry F. Keyes was an American architect known for designing the historic Boston Fish Pier in Boston, Massachusetts.
-
C.
Carl J. Kilpatrick
Carl J. Kilpatrick is an individual notable enough to be specifically cited as a bearer of the surname Kilpatrick, though detailed public information about his life or achievements is limited.
-
D.
William Eldred Jackson
William Eldred Jackson was the son of U.S. Supreme Court Justice and Nuremberg prosecutor Robert H. Jackson.
-
E.
John Davis
John Davis was a 16th-century English navigator and explorer best known for his Arctic voyages in search of the Northwest Passage.
- 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 B. McDonald Target entity description: John B. McDonald was an American civil engineer best known for overseeing the construction of New York City's first subway system.
-
A.
John H. Ferguson
John H. Ferguson was the Louisiana judge whose ruling upholding racial segregation in the Plessy v. Ferguson case led to the U.S. Supreme Court’s landmark “separate but equal” decision.
-
B.
Henry F. Keyes
Henry F. Keyes was an American architect known for designing the historic Boston Fish Pier in Boston, Massachusetts.
-
C.
Carl J. Kilpatrick
Carl J. Kilpatrick is an individual notable enough to be specifically cited as a bearer of the surname Kilpatrick, though detailed public information about his life or achievements is limited.
-
D.
William Eldred Jackson
William Eldred Jackson was the son of U.S. Supreme Court Justice and Nuremberg prosecutor Robert H. Jackson.
-
E.
John Davis
John Davis was a 16th-century English navigator and explorer best known for his Arctic voyages in search of the Northwest Passage.
- F. None of above. chosen
Statements (12)
| Predicate | Object |
|---|---|
| instanceOf |
American
ⓘ
civil engineer ⓘ person ⓘ |
| countryOfCitizenship | United States of America ⓘ |
| employer | Interborough Rapid Transit Company ⓘ |
| fieldOfWork | civil engineering ⓘ |
| gender | male ⓘ |
| knownFor | overseeing the construction of New York City's first subway system ⓘ |
| name | John B. McDonald ⓘ |
| notableWork | New York City first subway system ⓘ |
| occupation | civil engineer ⓘ |
| workLocation | New York City ⓘ |
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 B. McDonald Description of subject: John B. McDonald was an American civil engineer best known for overseeing the construction of New York City's first subway system.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.