RDS-1 test
E663518
The RDS-1 test was the Soviet Union’s first successful detonation of an atomic bomb in 1949, marking its entry into the nuclear arms race with the United States.
All labels observed (2)
| Label | Occurrences |
|---|---|
| RDS-1 | 3 |
| RDS-1 test canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7433226 — 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: RDS-1 test Context triple: [Soviet atomic bomb project (indirectly, via espionage), culminatedIn, RDS-1 test]
-
A.
R-1 rocket
The R-1 rocket was an early Soviet ballistic missile and research rocket developed after World War II as a near-copy of Germany’s V-2, serving as a foundation for later Soviet rocketry.
-
B.
R-1 missile
The R-1 missile was an early Soviet short-range ballistic missile closely based on the German V-2, marking the USSR’s first significant step into rocket and missile technology.
-
C.
R-11
R-11 is a Soviet short-range tactical ballistic missile that formed the basis for the later Scud missile family.
-
D.
R-2 missile
The R-2 missile was an early Soviet short-range ballistic missile, an improved derivative of the German V-2, used primarily for military purposes and high-altitude research in the early Cold War period.
-
E.
R-9 missile
The R-9 missile was a Soviet intercontinental ballistic missile of the early Cold War era, designed to deliver nuclear warheads over long distances as part of the USSR's strategic deterrent forces.
- 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: RDS-1 test Target entity description: The RDS-1 test was the Soviet Union’s first successful detonation of an atomic bomb in 1949, marking its entry into the nuclear arms race with the United States.
-
A.
R-1 rocket
The R-1 rocket was an early Soviet ballistic missile and research rocket developed after World War II as a near-copy of Germany’s V-2, serving as a foundation for later Soviet rocketry.
-
B.
R-1 missile
The R-1 missile was an early Soviet short-range ballistic missile closely based on the German V-2, marking the USSR’s first significant step into rocket and missile technology.
-
C.
R-11
R-11 is a Soviet short-range tactical ballistic missile that formed the basis for the later Scud missile family.
-
D.
R-2 missile
The R-2 missile was an early Soviet short-range ballistic missile, an improved derivative of the German V-2, used primarily for military purposes and high-altitude research in the early Cold War period.
-
E.
R-9 missile
The R-9 missile was a Soviet intercontinental ballistic missile of the early Cold War era, designed to deliver nuclear warheads over long distances as part of the USSR's strategic deterrent forces.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
atomic bomb test
ⓘ
nuclear weapons test ⓘ |
| alsoKnownAs |
First Lightning
ⓘ
Joe-1 ⓘ |
| category |
1949 in the Soviet Union
ⓘ
Cold War military history of the Soviet Union ⓘ History of nuclear weapons ⓘ Nuclear weapons testing of the Soviet Union ⓘ |
| consequence |
accelerated nuclear arms race
ⓘ
ended U.S. monopoly on nuclear weapons ⓘ increased tensions in U.S.–Soviet relations ⓘ |
| continent | Asia ⓘ |
| country | Soviet Union ⓘ |
| date | 1949-08-29 ⓘ |
| designType | plutonium implosion device ⓘ |
| detectionMethod | airborne radioactive sampling ⓘ |
| era | early Cold War ⓘ |
| followedBy | subsequent Soviet nuclear tests ⓘ |
| geopoliticalContext | beginning of nuclear arms race ⓘ |
| hasCodename |
RDS-1
ⓘ
linked to:
RDS-1 test
|
| impact |
altered global strategic balance
ⓘ
spurred U.S. development of thermonuclear weapons ⓘ |
| location |
Kazakh SSR
ⓘ
Kazakhstan ⓘ Semipalatinsk Test Site ⓘ |
| militaryBranchInvolved | Soviet Air Forces ⓘ |
| observedBy |
United States
ⓘ
linked to:
United States of America
|
| partOf | Soviet atomic bomb project ⓘ |
| politicalLeader | Joseph Stalin ⓘ |
| programLeader | Igor Kurchatov ⓘ |
| purpose |
achieve strategic parity with the United States
ⓘ
demonstrate Soviet nuclear capability ⓘ |
| region | Semipalatinsk ⓘ |
| result | successful detonation ⓘ |
| significance |
first successful Soviet atomic bomb detonation
ⓘ
marked Soviet entry into nuclear arms race with the United States ⓘ |
| similarTo | Fat Man design ⓘ |
| supervisedBy | Soviet nuclear program leadership ⓘ |
| technologySource |
Soviet scientific research
ⓘ
espionage on U.S. Manhattan Project ⓘ |
| testedBy |
Soviet Armed Forces
ⓘ
linked to:
Soviet armed forces
|
| testedFor | Soviet government ⓘ |
| testNumber | first Soviet nuclear test ⓘ |
| testSeries | Soviet nuclear test series ⓘ |
| weaponTested |
RDS-1
ⓘ
linked to:
RDS-1 test
|
| weaponType | fission bomb ⓘ |
| year | 1949 ⓘ |
| yield | approximately 22 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: RDS-1 test Description of subject: The RDS-1 test was the Soviet Union’s first successful detonation of an atomic bomb in 1949, marking its entry into the nuclear arms race with the United States.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: RDS-1 test
linked to: RDS-1 test
linked to: RDS-1 test