Trinity test device
E16090
The Trinity test device was the first nuclear explosive ever detonated, a plutonium-based implosion bomb tested by the Manhattan Project in July 1945.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Trinity nuclear test | 13 |
| Trinity test | 8 |
| Trinity test device canonical | 4 |
| Trinity nuclear test of July 1945 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T57180 — 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: Trinity test device Context triple: [Los Alamos Laboratory, designed, Trinity test device]
-
A.
Chicago Pile-1
Chicago Pile-1 was the world’s first artificial nuclear reactor, achieving the first controlled, self-sustaining nuclear chain reaction in 1942 under the leadership of Enrico Fermi.
-
B.
Manhattan Project
The Manhattan Project was the secret U.S.-led World War II research and development program that produced the first nuclear weapons.
-
C.
Operation Crossroads
Operation Crossroads was a series of U.S. nuclear weapons tests conducted at Bikini Atoll in 1946 to study the effects of atomic bombs on warships and military equipment.
-
D.
MAUD Report
The MAUD Report was a secret 1941 British scientific assessment that concluded an atomic bomb was feasible and helped spur the U.S. Manhattan Project.
-
E.
Frisch–Peierls memorandum
The Frisch–Peierls memorandum was a pivotal 1940 document by physicists Otto Frisch and Rudolf Peierls that first outlined the feasibility of a small, practical uranium-based atomic bomb, helping to catalyze British and later Allied nuclear weapons research.
- 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: Trinity test device Target entity description: The Trinity test device was the first nuclear explosive ever detonated, a plutonium-based implosion bomb tested by the Manhattan Project in July 1945.
-
A.
Chicago Pile-1
Chicago Pile-1 was the world’s first artificial nuclear reactor, achieving the first controlled, self-sustaining nuclear chain reaction in 1942 under the leadership of Enrico Fermi.
-
B.
Manhattan Project
The Manhattan Project was the secret U.S.-led World War II research and development program that produced the first nuclear weapons.
-
C.
Operation Crossroads
Operation Crossroads was a series of U.S. nuclear weapons tests conducted at Bikini Atoll in 1946 to study the effects of atomic bombs on warships and military equipment.
-
D.
MAUD Report
The MAUD Report was a secret 1941 British scientific assessment that concluded an atomic bomb was feasible and helped spur the U.S. Manhattan Project.
-
E.
Frisch–Peierls memorandum
The Frisch–Peierls memorandum was a pivotal 1940 document by physicists Otto Frisch and Rudolf Peierls that first outlined the feasibility of a small, practical uranium-based atomic bomb, helping to catalyze British and later Allied nuclear weapons research.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
atomic bomb
ⓘ
nuclear explosive device ⓘ plutonium implosion bomb ⓘ |
| associatedWith |
World War II
ⓘ
nuclear weapons development ⓘ |
| codeName | The Gadget ⓘ |
| coreShape | solid plutonium core ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| craterDepth | about 1.5 meters ⓘ |
| craterDiameter | about 80 meters ⓘ |
| designType | implosion-type nuclear weapon ⓘ |
| developer |
Los Alamos Laboratory
ⓘ
Manhattan Engineer District of the U.S. Army Corps of Engineers ⓘ
surface form:
Manhattan Engineer District
|
| diameter | about 1.5 meters ⓘ |
| explosiveLensType | high-explosive lenses ⓘ |
| firstOf | first nuclear explosive ever detonated ⓘ |
| fissileMaterial | plutonium-239 ⓘ |
| hasComponent |
detonators
ⓘ
explosive lenses ⓘ neutron initiator ⓘ plutonium pit ⓘ steel containment shell ⓘ tamper ⓘ |
| historicalSignificance | marked beginning of nuclear age ⓘ |
| influenced |
Fat Man
ⓘ
surface form:
Fat Man nuclear bomb
|
| length | about 3.25 meters ⓘ |
| locationRelativeTo | about 35 miles southeast of Socorro, New Mexico ⓘ |
| mountedOn | 100-foot steel tower ⓘ |
| mushroomCloudHeight | about 12 kilometers ⓘ |
| partOf | Manhattan Project ⓘ |
| producedMaterial | trinitite ⓘ |
| purpose | proof-of-concept test of implosion design ⓘ |
| resultedIn | successful nuclear detonation ⓘ |
| safetyFeature | remote detonation system ⓘ |
| similarTo |
Fat Man
ⓘ
surface form:
Fat Man bomb design
|
| supervisedBy | J. Robert Oppenheimer ⓘ |
| testDate | 1945-07-16 ⓘ |
| testedAt |
Trinity test device
self-linksurface differs
ⓘ
surface form:
Trinity test
|
| testedBy |
United States Army
ⓘ
U.S. Army Corps of Engineers ⓘ
surface form:
United States Army Corps of Engineers
|
| testSite |
Jornada del Muerto desert
ⓘ
New Mexico ⓘ White Sands Missile Range ⓘ
surface form:
White Sands Proving Ground
|
| testTime | 05:29:21 local time ⓘ |
| testYield | about 21 kilotons of TNT ⓘ |
| usedExplosives |
Baratol
ⓘ
Composition B ⓘ |
| weight | about 5.4 metric tons ⓘ |
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: Trinity test device Description of subject: The Trinity test device was the first nuclear explosive ever detonated, a plutonium-based implosion bomb tested by the Manhattan Project in July 1945.
Referenced by (26)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Trinity nuclear test
subject surface form:
Hanford Site
this entity surface form:
Trinity nuclear test
subject surface form:
Manhattan Engineer District
this entity surface form:
Trinity nuclear test
this entity surface form:
Trinity nuclear test
this entity surface form:
Trinity nuclear test
this entity surface form:
Trinity test
this entity surface form:
Trinity nuclear test
this entity surface form:
Trinity nuclear test
subject surface form:
B Reactor
this entity surface form:
Trinity test
this entity surface form:
Trinity nuclear test
this entity surface form:
Trinity test
this entity surface form:
Trinity nuclear test
this entity surface form:
Trinity test
this entity surface form:
Trinity test
this entity surface form:
Trinity test
this entity surface form:
Trinity test
this entity surface form:
Trinity nuclear test
this entity surface form:
Trinity nuclear test
this entity surface form:
Trinity test
this entity surface form:
Trinity nuclear test
United States Nuclear Tests July 1945 through September 1992 (DOE/NV-209)
→
includesEvent
→
Trinity test device
ⓘ
this entity surface form:
Trinity nuclear test
United States Nuclear Tests July 1945 through September 1992 (DOE/NV-209)
→
relatedTo
→
Trinity test device
ⓘ
this entity surface form:
Trinity nuclear test of July 1945