Ludlow strike
E199184
The Ludlow strike was a major 1913–1914 coal miners’ labor conflict in Colorado, marked by violent clashes between striking workers and company-hired forces, that became a pivotal event in U.S. labor history.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Ludlow Massacre | 4 |
| Ludlow strike canonical | 1 |
| Ludlow tent colony | 1 |
| Ludlow tent colony attack | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1788748 — 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: Ludlow strike Context triple: [United Mine Workers of America, notableEventInHistory, Ludlow strike]
-
A.
Homestead Strike
The Homestead Strike was an 1892 industrial labor conflict at Andrew Carnegie’s steel plant in Homestead, Pennsylvania, that became one of the most violent and significant clashes between workers and management in U.S. labor history.
-
B.
Peterloo Massacre
The Peterloo Massacre was an 1819 incident in Manchester where cavalry charged into a large, peaceful pro-democracy rally, killing and injuring many protesters and becoming a pivotal moment in British political reform history.
-
C.
Bread and Roses Strike
The Bread and Roses Strike was a landmark 1912 textile workers’ strike in Lawrence, Massachusetts, notable for its large immigrant workforce, women’s leadership, and its role in U.S. labor history.
-
D.
Ludlow
Ludlow is a historic market town in Shropshire, England, renowned for its well-preserved medieval architecture, Norman castle, and vibrant food culture.
-
E.
Merthyr Rising of 1831
The Merthyr Rising of 1831 was a major workers’ uprising in the Welsh industrial town of Merthyr Tydfil, driven by economic hardship and demands for political and social reform.
- 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: Ludlow strike Target entity description: The Ludlow strike was a major 1913–1914 coal miners’ labor conflict in Colorado, marked by violent clashes between striking workers and company-hired forces, that became a pivotal event in U.S. labor history.
-
A.
Homestead Strike
The Homestead Strike was an 1892 industrial labor conflict at Andrew Carnegie’s steel plant in Homestead, Pennsylvania, that became one of the most violent and significant clashes between workers and management in U.S. labor history.
-
B.
Peterloo Massacre
The Peterloo Massacre was an 1819 incident in Manchester where cavalry charged into a large, peaceful pro-democracy rally, killing and injuring many protesters and becoming a pivotal moment in British political reform history.
-
C.
Bread and Roses Strike
The Bread and Roses Strike was a landmark 1912 textile workers’ strike in Lawrence, Massachusetts, notable for its large immigrant workforce, women’s leadership, and its role in U.S. labor history.
-
D.
Ludlow
Ludlow is a historic market town in Shropshire, England, renowned for its well-preserved medieval architecture, Norman castle, and vibrant food culture.
-
E.
Merthyr Rising of 1831
The Merthyr Rising of 1831 was a major workers’ uprising in the Welsh industrial town of Merthyr Tydfil, driven by economic hardship and demands for political and social reform.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
coal miners' strike
ⓘ
labor conflict ⓘ labor strike ⓘ |
| cause |
demands for better wages
ⓘ
demands for safer working conditions ⓘ demands for union recognition ⓘ opposition to company towns and scrip pay ⓘ |
| chronologyWithin | Colorado Coalfield War ⓘ |
| commemoratedBy | Ludlow Monument ⓘ |
| conflict | Colorado Coalfield War ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| describedAs | pivotal event in U.S. labor history ⓘ |
| endTime | 1914-12 ⓘ |
| field | labor history ⓘ |
| hasEffect |
influence on later U.S. labor legislation
ⓘ
symbol of labor struggle in U.S. history ⓘ |
| hasMemorial | Ludlow Monument ⓘ |
| hasPart |
Ludlow strike
self-linksurface differs
ⓘ
surface form:
Ludlow Massacre
|
| hasTopic |
industrial relations in early 20th-century America
ⓘ
labor rights ⓘ |
| industry | coal mining ⓘ |
| locatedIn |
Colorado
ⓘ
Ludlow, Colorado ⓘ |
| locationOf |
Ludlow strike
self-linksurface differs
ⓘ
surface form:
Ludlow tent colony
|
| mainEvent |
Ludlow strike
self-linksurface differs
ⓘ
surface form:
Ludlow Massacre
|
| notableFor |
killing of women and children in tent colony
ⓘ
use of state militia against striking workers ⓘ violent clashes between strikers and company forces ⓘ |
| numberOfCasualties | dozens of people killed ⓘ |
| opponent |
Colorado Fuel and Iron Company
ⓘ
John D. Rockefeller Jr. ⓘ |
| organizedBy | United Mine Workers of America ⓘ |
| participant |
Colorado Fuel and Iron Company
ⓘ
Colorado Army National Guard ⓘ
surface form:
Colorado National Guard
United Mine Workers of America ⓘ coal miners ⓘ company-hired guards ⓘ strikebreakers ⓘ |
| result |
Ludlow strike
self-linksurface differs
ⓘ
surface form:
Ludlow Massacre
congressional investigations into labor conditions in Colorado ⓘ increased scrutiny of Rockefeller interests ⓘ national public outcry ⓘ strengthening of U.S. labor reform movements ⓘ |
| significantEvent |
Ludlow strike
self-linksurface differs
ⓘ
surface form:
Ludlow tent colony attack
|
| startTime | 1913-09 ⓘ |
| timePeriod | 1913–1914 ⓘ |
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: Ludlow strike Description of subject: The Ludlow strike was a major 1913–1914 coal miners’ labor conflict in Colorado, marked by violent clashes between striking workers and company-hired forces, that became a pivotal event in U.S. labor history.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Ludlow Massacre
this entity surface form:
Ludlow Massacre
this entity surface form:
Ludlow tent colony attack
this entity surface form:
Ludlow Massacre
this entity surface form:
Ludlow tent colony
this entity surface form:
Ludlow Massacre