Pinkerton National Detective Agency
E6114
The Pinkerton National Detective Agency is a historic American private security and detective firm notorious for its strikebreaking activities and involvement in major labor conflicts and high-profile investigations in the 19th and early 20th centuries.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Pinkerton National Detective Agency canonical | 15 |
| Pinkerton | 2 |
| Pinkerton Agency | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T70028 — 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: Pinkerton National Detective Agency Context triple: [Homestead Strike, involvesOrganization, Pinkerton National Detective Agency]
-
A.
Federal Bureau of Investigation
The Federal Bureau of Investigation (FBI) is the principal federal law enforcement and domestic intelligence agency of the United States, responsible for investigating and enforcing federal laws and protecting national security.
-
B.
United States Capitol Police
The United States Capitol Police is a federal law enforcement agency responsible for protecting the U.S. Capitol complex, its members, staff, and visitors, and for maintaining security and order on Capitol grounds.
-
C.
New York City Police Department
The New York City Police Department is the primary law enforcement agency for New York City, responsible for policing its five boroughs and serving as one of the largest and most recognizable police forces in the world.
-
D.
Observer Corps
The Observer Corps was a British civilian organization that visually tracked and reported aircraft movements to support the country’s air defense, especially during World War II.
-
E.
Carnegie
Carnegie is a Scottish surname most famously associated with industrialist and philanthropist Andrew Carnegie.
- 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: Pinkerton National Detective Agency Target entity description: The Pinkerton National Detective Agency is a historic American private security and detective firm notorious for its strikebreaking activities and involvement in major labor conflicts and high-profile investigations in the 19th and early 20th centuries.
-
A.
United States Secret Service
The United States Secret Service is a federal law enforcement agency best known for protecting the U.S. president and other national leaders, as well as investigating financial and cyber crimes.
-
B.
Federal Bureau of Investigation
The Federal Bureau of Investigation (FBI) is the principal federal law enforcement and domestic intelligence agency of the United States, responsible for investigating and enforcing federal laws and protecting national security.
-
C.
United States Capitol Police
The United States Capitol Police is a federal law enforcement agency responsible for protecting the U.S. Capitol complex, its members, staff, and visitors, and for maintaining security and order on Capitol grounds.
-
D.
New York City Police Department
The New York City Police Department is the primary law enforcement agency for New York City, responsible for policing its five boroughs and serving as one of the largest and most recognizable police forces in the world.
-
E.
Observer Corps
The Observer Corps was a British civilian organization that visually tracked and reported aircraft movements to support the country’s air defense, especially during World War II.
- F. None of above. chosen
Statements (54)
| Predicate | Object |
|---|---|
| instanceOf |
private detective agency
ⓘ
private security company ⓘ |
| alsoKnownAs |
Pinkerton National Detective Agency
ⓘ
surface form:
Pinkerton
Pinkerton National Detective Agency ⓘ
surface form:
Pinkerton Agency
|
| country |
United States of America
ⓘ
surface form:
United States
|
| employed | Kate Warne ⓘ |
| foundedAs | Pinkerton National Detective Agency self-link ⓘ |
| foundedBy |
Allan Pinkerton
ⓘ
surface form:
Allan J. Pinkerton
Allan Pinkerton ⓘ |
| hasLogoFeature |
all-seeing eye
ⓘ
unblinking eye ⓘ |
| hasMotto | We Never Sleep ⓘ |
| hasReputation |
controversial role in labor history
ⓘ
notorious for strikebreaking ⓘ pioneering national detective service in the United States ⓘ |
| hasSloganOrigin | We Never Sleep ⓘ |
| headquartersLocation |
Chicago, Illinois, United States
ⓘ
surface form:
Chicago
Illinois ⓘ United States of America ⓘ
surface form:
United States
|
| inception | 1850 ⓘ |
| industry |
investigations
ⓘ
private security ⓘ risk management ⓘ |
| involvedInEvent |
Great Railroad Strike of 1877
ⓘ
Homestead Strike ⓘ Pullman Strike ⓘ |
| notableEmployee | Kate Warne ⓘ |
| notableFor |
anti-union activities
ⓘ
employing one of the first female detectives in the United States ⓘ high-profile criminal investigations ⓘ industrial security ⓘ involvement in labor disputes ⓘ involvement in major labor conflicts in the 19th century ⓘ involvement in major labor conflicts in the early 20th century ⓘ involvement in the Homestead Strike ⓘ private detective services ⓘ private security services ⓘ protective services for industrialists ⓘ protective services for railroads ⓘ pursuit of Butch Cassidy and the Wild Bunch ⓘ pursuit of Jesse James ⓘ pursuit of outlaws in the American West ⓘ pursuit of the James–Younger Gang ⓘ railroad security ⓘ strikebreaking activities ⓘ strikebreaking for large corporations ⓘ union infiltration ⓘ |
| originalHeadquartersLocation |
Chicago, Illinois, United States
ⓘ
surface form:
Chicago
Illinois ⓘ United States of America ⓘ
surface form:
United States
|
| partOf |
history of American labor relations
ⓘ
history of American law enforcement ⓘ |
| timePeriodOfProminence |
19th century
ⓘ
early 20th century ⓘ |
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: Pinkerton National Detective Agency Description of subject: The Pinkerton National Detective Agency is a historic American private security and detective firm notorious for its strikebreaking activities and involvement in major labor conflicts and high-profile investigations in the 19th and early 20th centuries.
Referenced by (18)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Pinkerton
this entity surface form:
Pinkerton Agency
this entity surface form:
Pinkerton