Test Baker
E50510
Test Baker was the second underwater nuclear detonation of Operation Crossroads in 1946, conducted at Bikini Atoll to study the effects of nuclear weapons on naval ships and equipment.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Test Baker canonical | 6 |
How this entity was disambiguated
This entity first appeared as the object of triple T397141 — 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: Test Baker Context triple: [Operation Crossroads, hasPart, Test Baker]
-
A.
Baker
Baker is a small desert town in San Bernardino County, California, known as a roadside stop and gateway to Death Valley for travelers along Interstate 15 between Los Angeles and Las Vegas.
-
B.
Baker
Baker is a common English occupational surname originally given to people who baked bread or worked in a bakery.
-
C.
Testify
"Testify" is a popular song by the American rock band Rage Against the Machine, known for its politically charged lyrics and aggressive sound.
-
D.
Test Track
Test Track is a high-speed automotive-themed attraction at EPCOT where guests experience a simulated vehicle testing facility.
-
E.
The Bench
The Bench is the dedicated student cheering section for University of California, Berkeley football games, known for its energetic support and traditions during Big Game and other home matchups.
- 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: Test Baker Target entity description: Test Baker was the second underwater nuclear detonation of Operation Crossroads in 1946, conducted at Bikini Atoll to study the effects of nuclear weapons on naval ships and equipment.
-
A.
Baker
Baker is a small desert town in San Bernardino County, California, known as a roadside stop and gateway to Death Valley for travelers along Interstate 15 between Los Angeles and Las Vegas.
-
B.
Baker
Baker is a common English occupational surname originally given to people who baked bread or worked in a bakery.
-
C.
Testify
"Testify" is a popular song by the American rock band Rage Against the Machine, known for its politically charged lyrics and aggressive sound.
-
D.
Test Track
Test Track is a high-speed automotive-themed attraction at EPCOT where guests experience a simulated vehicle testing facility.
-
E.
The Bench
The Bench is the dedicated student cheering section for University of California, Berkeley football games, known for its energetic support and traditions during Big Game and other home matchups.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
nuclear weapons test
ⓘ
underwater nuclear detonation ⓘ |
| associatedProgram | early Cold War nuclear testing program of the United States ⓘ |
| blastEffect |
caused severe damage to nearby ships by shock and flooding
ⓘ
generated a large water column and base surge ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| date | 1946-07-25 ⓘ |
| detonationDepth |
about 90 feet
ⓘ
approximately 27 meters ⓘ |
| detonationMedium | underwater ⓘ |
| detonationPosition | suspended beneath a landing ship ⓘ |
| deviceNickname | Helen of Bikini ⓘ |
| deviceType | plutonium implosion bomb ⓘ |
| displacedPopulation | contributed to long-term displacement of Bikini Atoll inhabitants ⓘ |
| environmentalImpact | long-term radioactive contamination of Bikini lagoon sediments ⓘ |
| falloutType | base surge laden with radioactive water droplets ⓘ |
| followedBy | Test Charlie ⓘ |
| historicalSignificance |
early demonstration of the radiological hazards of nuclear weapons
ⓘ
influenced later nuclear test safety and decontamination procedures ⓘ |
| legalStatus | conducted under U.S. military authority at a United Nations Trust Territory ⓘ |
| location |
Bikini Atoll
ⓘ
Marshall Islands ⓘ |
| notableConsequence |
led to scrapping or sinking of many contaminated vessels
ⓘ
made decontamination of many ships impossible ⓘ produced severe radioactive contamination of lagoon water and ships ⓘ |
| numberOfTargetShips | over 90 ⓘ |
| observation | extensively photographed and instrumented for scientific study ⓘ |
| operator |
Manhattan Project personnel
ⓘ
United States Army ⓘ United States Navy ⓘ |
| partOf | Operation Crossroads ⓘ |
| precededBy | Test Able ⓘ |
| purpose |
to evaluate radiological contamination from an underwater nuclear explosion
ⓘ
to study the effects of nuclear weapons on naval ships and equipment ⓘ |
| radiologicalEffect | produced intense neutron activation of lagoon water and ship hulls ⓘ |
| result |
heavily contaminated target fleet with radioactive fallout
ⓘ
sank multiple target ships ⓘ |
| targetType |
equipment
ⓘ
naval vessels ⓘ |
| testGeometry | shallow underwater burst in a lagoon ⓘ |
| testNumberInSeries | second ⓘ |
| testSeriesRole |
demonstration of radiological warfare potential against naval forces
ⓘ
first underwater nuclear explosion against a fleet of ships ⓘ |
| timeAfterAble | 24 days ⓘ |
| year | 1946 ⓘ |
| yield | 23 kilotons of TNT ⓘ |
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: Test Baker Description of subject: Test Baker was the second underwater nuclear detonation of Operation Crossroads in 1946, conducted at Bikini Atoll to study the effects of nuclear weapons on naval ships and equipment.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.