John A. Hardenbrook
E346084
John A. Hardenbrook was one of the early New York City brokers who helped found what became the New York Stock Exchange by signing the 1792 Buttonwood Agreement.
All labels observed (1)
| Label | Occurrences |
|---|---|
| John A. Hardenbrook canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T723672 — 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 A. Hardenbrook Context triple: [Buttonwood Agreement, signatory, John A. Hardenbrook]
-
A.
Harry M. Wegeforth
Harry M. Wegeforth was an American physician and civic leader best known for establishing and guiding the early development of the San Diego Zoo into a major zoological institution.
-
B.
Edmund G. Ross
Edmund G. Ross was a 19th-century U.S. senator from Kansas best known for casting the decisive vote against the impeachment of President Andrew Johnson, an act later celebrated in John F. Kennedy’s "Profiles in Courage."
-
C.
Edwin C. Whitehead
Edwin C. Whitehead was an American businessman and philanthropist best known for founding the Whitehead Institute for Biomedical Research and supporting advances in life sciences.
-
D.
Franklin H. Martin
Franklin H. Martin was an American surgeon and medical leader best known for founding and guiding the development of the American College of Surgeons.
-
E.
William E. Nickerson
William E. Nickerson was a prominent benefactor and businessman associated with Boston University, for whom the university’s Nickerson Field stadium is named.
- 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 A. Hardenbrook Target entity description: John A. Hardenbrook was one of the early New York City brokers who helped found what became the New York Stock Exchange by signing the 1792 Buttonwood Agreement.
-
A.
Harry M. Wegeforth
Harry M. Wegeforth was an American physician and civic leader best known for establishing and guiding the early development of the San Diego Zoo into a major zoological institution.
-
B.
Edmund G. Ross
Edmund G. Ross was a 19th-century U.S. senator from Kansas best known for casting the decisive vote against the impeachment of President Andrew Johnson, an act later celebrated in John F. Kennedy’s "Profiles in Courage."
-
C.
Edwin C. Whitehead
Edwin C. Whitehead was an American businessman and philanthropist best known for founding the Whitehead Institute for Biomedical Research and supporting advances in life sciences.
-
D.
Franklin H. Martin
Franklin H. Martin was an American surgeon and medical leader best known for founding and guiding the development of the American College of Surgeons.
-
E.
William E. Nickerson
William E. Nickerson was a prominent benefactor and businessman associated with Boston University, for whom the university’s Nickerson Field stadium is named.
- F. None of above. chosen
Statements (14)
| Predicate | Object |
|---|---|
| instanceOf |
New York City broker
ⓘ
person ⓘ stockbroker ⓘ |
| date | 1792 ⓘ |
| followsFrom | Buttonwood Agreement ⓘ |
| helpedFound | New York Stock Exchange ⓘ |
| location | New York City ⓘ |
| notableFor |
role in the origins of the New York Stock Exchange
ⓘ
signing the 1792 Buttonwood Agreement ⓘ |
| occupation | broker ⓘ |
| predecessorOf | New York Stock Exchange ⓘ |
| signatory | John A. Hardenbrook NERFINISHED ⓘ |
| signed | Buttonwood Agreement ⓘ |
| 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 A. Hardenbrook Description of subject: John A. Hardenbrook was one of the early New York City brokers who helped found what became the New York Stock Exchange by signing the 1792 Buttonwood Agreement.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.