Stagg Field
E118565
Stagg Field was the University of Chicago’s athletic field and stadium, historically significant as the site of the world’s first controlled nuclear chain reaction.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Stagg Field canonical | 3 |
| New Stagg Field | 1 |
| Stagg Field (former University of Chicago stadium) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T719313 — 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: Stagg Field Context triple: [Chicago Pile-1, locatedInBuilding, Stagg Field]
-
A.
Schaefer Stadium
Schaefer Stadium was an outdoor football stadium in Foxborough, Massachusetts, best known as the longtime home of the New England Patriots before the construction of Gillette Stadium.
-
B.
Nickerson Field
Nickerson Field is a multi-purpose stadium in Boston, Massachusetts, now primarily used by Boston University athletics and formerly an early home venue for the New England Patriots (then Boston Patriots).
-
C.
Rickwood Field
Rickwood Field is a historic baseball park in Birmingham, Alabama, widely regarded as the oldest professional ballpark in the United States and a former home of both minor league and Negro League teams.
-
D.
Henderson Field
Henderson Field is a strategically vital airfield on Guadalcanal in the Solomon Islands that became a focal point of intense fighting between Allied and Japanese forces during World War II.
-
E.
Roberts Field
Roberts Field is an athletic field at the Massachusetts Institute of Technology used primarily for varsity and recreational sports.
- 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: Stagg Field Target entity description: Stagg Field was the University of Chicago’s athletic field and stadium, historically significant as the site of the world’s first controlled nuclear chain reaction.
-
A.
Schaefer Stadium
Schaefer Stadium was an outdoor football stadium in Foxborough, Massachusetts, best known as the longtime home of the New England Patriots before the construction of Gillette Stadium.
-
B.
Nickerson Field
Nickerson Field is a multi-purpose stadium in Boston, Massachusetts, now primarily used by Boston University athletics and formerly an early home venue for the New England Patriots (then Boston Patriots).
-
C.
Rickwood Field
Rickwood Field is a historic baseball park in Birmingham, Alabama, widely regarded as the oldest professional ballpark in the United States and a former home of both minor league and Negro League teams.
-
D.
Henderson Field
Henderson Field is a strategically vital airfield on Guadalcanal in the Solomon Islands that became a focal point of intense fighting between Allied and Japanese forces during World War II.
-
E.
Roberts Field
Roberts Field is an athletic field at the Massachusetts Institute of Technology used primarily for varsity and recreational sports.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
athletic field
ⓘ
historical site ⓘ stadium ⓘ |
| affiliation |
Big Ten Conference
ⓘ
surface form:
Big Ten Conference (historical)
|
| architecturalStyle | concrete stadium stands ⓘ |
| associatedWith |
Chicago Pile-1
ⓘ
Enrico Fermi ⓘ Manhattan Project ⓘ atomic energy research ⓘ nuclear physics ⓘ |
| category |
Defunct college football venues
ⓘ
Manhattan Project sites ⓘ Sports venues in Chicago ⓘ University of Chicago buildings and structures ⓘ |
| commemoratedBy |
Henry Moore sculpture "Nuclear Energy"
ⓘ
historical plaque at the University of Chicago ⓘ |
| coordinateLocation | 41.7897°N 87.5996°W (approximate former site) ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| dateOfEvent | 1942-12-02 ⓘ |
| demolishedIn | 1957 ⓘ |
| era | early 20th century college football ⓘ |
| eventLocation | under the West Stands of Stagg Field ⓘ |
| hasPart |
bleachers
ⓘ
playing field ⓘ stands ⓘ |
| heritageDesignation |
National Historic Landmark
ⓘ
surface form:
National Historic Landmark (site of CP-1, commemorated)
|
| homeVenueOf | Chicago Maroons football team ⓘ |
| locatedIn |
Chicago, Illinois, United States
ⓘ
surface form:
Chicago
Illinois ⓘ United States of America ⓘ
surface form:
United States
University of Chicago ⓘ |
| namedAfter | Amos Alonzo Stagg ⓘ |
| notableFor |
association with Amos Alonzo Stagg
ⓘ
role in development of nuclear reactors ⓘ world’s first controlled, self-sustaining nuclear chain reaction ⓘ |
| operatedBy | University of Chicago ⓘ |
| ownedBy | University of Chicago ⓘ |
| partOf |
University of Chicago
ⓘ
surface form:
University of Chicago campus
|
| replacedBy |
Stagg Field
self-linksurface differs
ⓘ
surface form:
New Stagg Field
|
| significantEvent | Chicago Pile-1 first controlled nuclear chain reaction ⓘ |
| status | demolished ⓘ |
| usedFor |
American football
ⓘ
baseball ⓘ track and field ⓘ university athletics ⓘ |
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: Stagg Field Description of subject: Stagg Field was the University of Chicago’s athletic field and stadium, historically significant as the site of the world’s first controlled nuclear chain reaction.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Chicago Maroons
this entity surface form:
New Stagg Field
this entity surface form:
Stagg Field (former University of Chicago stadium)