David Duffield
E241490
David Duffield is an American billionaire entrepreneur and philanthropist best known for founding the enterprise software companies PeopleSoft and Workday.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Dave Duffield | 1 |
| David Duffield canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1008985 — 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: David Duffield Context triple: [PeopleSoft, foundedBy, David Duffield]
-
A.
Brian Fawcett
Brian Fawcett was the son of British explorer Percy Fawcett, known mainly for his connection to his father's legendary Amazon expeditions and disappearance.
-
B.
Andrew D. Martin
Andrew D. Martin is an American political scientist and academic administrator who serves as the chancellor of Washington University in St. Louis.
-
C.
Andrew Dunn
Andrew Dunn is a British cinematographer known for his work on numerous high-profile films and television productions.
-
D.
David Scearce
David Scearce is a Canadian screenwriter best known for adapting Christopher Isherwood’s novel into the acclaimed film "A Single Man."
-
E.
Tim McClelland
Tim McClelland is a former Major League Baseball umpire known for his long tenure, distinctive strike zone, and involvement in several high-profile postseason games.
- 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: David Duffield Target entity description: David Duffield is an American billionaire entrepreneur and philanthropist best known for founding the enterprise software companies PeopleSoft and Workday.
-
A.
Brian Fawcett
Brian Fawcett was the son of British explorer Percy Fawcett, known mainly for his connection to his father's legendary Amazon expeditions and disappearance.
-
B.
Andrew D. Martin
Andrew D. Martin is an American political scientist and academic administrator who serves as the chancellor of Washington University in St. Louis.
-
C.
Andrew Dunn
Andrew Dunn is a British cinematographer known for his work on numerous high-profile films and television productions.
-
D.
David Scearce
David Scearce is a Canadian screenwriter best known for adapting Christopher Isherwood’s novel into the acclaimed film "A Single Man."
-
E.
Tim McClelland
Tim McClelland is a former Major League Baseball umpire known for his long tenure, distinctive strike zone, and involvement in several high-profile postseason games.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
billionaire
ⓘ
entrepreneur ⓘ human ⓘ philanthropist ⓘ |
| almaMater |
College of Engineering, Cornell University
ⓘ
surface form:
Cornell University College of Engineering
|
| boardMemberOf |
Workday
ⓘ
surface form:
Workday, Inc.
|
| coFounded |
PeopleSoft
ⓘ
Workday ⓘ
surface form:
Workday, Inc.
|
| countryOfCitizenship | United States of America ⓘ |
| donatedTo |
Cornell University
ⓘ
University of California, Berkeley ⓘ various animal welfare organizations in the United States ⓘ |
| educatedAt | Cornell University ⓘ |
| employer |
PeopleSoft
ⓘ
Workday ⓘ
surface form:
Workday, Inc.
|
| fieldOfWork |
cloud computing
ⓘ
enterprise software ⓘ |
| founded |
Dave & Cheryl Duffield Foundation
ⓘ
Duffield Hall at Cornell University (as major donor and namesake) ⓘ Maddie's Fund ⓘ PeopleSoft ⓘ Workday ⓘ
surface form:
Workday, Inc.
|
| hasAcademicDegree |
MBA
ⓘ
bachelor's degree in electrical engineering ⓘ |
| hasResidence |
California, United States
ⓘ
surface form:
California
Nevada ⓘ |
| industry |
enterprise software
ⓘ
human capital management software ⓘ |
| knownFor |
founding PeopleSoft
ⓘ
founding Workday, Inc. ⓘ |
| languageSpoken | English ⓘ |
| netWorth | billionaire status as estimated by Forbes ⓘ |
| notableFor |
philanthropy in animal welfare
ⓘ
philanthropy in education ⓘ |
| notableWork |
PeopleSoft
ⓘ
Workday ⓘ
surface form:
Workday, Inc.
|
| occupation |
businessperson
ⓘ
entrepreneur ⓘ philanthropist ⓘ software engineer ⓘ |
| philanthropicFocus |
higher education
ⓘ
no-kill animal shelters ⓘ veterinary medicine ⓘ |
| positionHeld |
chairman of Workday, Inc.
ⓘ
chief executive officer of PeopleSoft ⓘ co-CEO of Workday, Inc. ⓘ |
| spouse | Cheryl Duffield ⓘ |
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: David Duffield Description of subject: David Duffield is an American billionaire entrepreneur and philanthropist best known for founding the enterprise software companies PeopleSoft and Workday.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.