Tsar Bomba
E535300
Tsar Bomba was a Soviet hydrogen bomb detonated in 1961, the most powerful nuclear weapon ever tested in history.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Tsar Bomba canonical | 4 |
| Tsar Bomba nuclear test | 1 |
| Tsar Bomba test | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5648021 — 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: Tsar Bomba Context triple: [Novaya Zemlya, largestNuclearTest, Tsar Bomba]
-
A.
Ivy Mike
Ivy Mike was the first successful full-scale test of a thermonuclear (hydrogen) bomb conducted by the United States in 1952.
-
B.
B53 nuclear bomb
The B53 nuclear bomb was a high-yield, Cold War–era U.S. thermonuclear gravity bomb designed for strategic deterrence and bunker-busting missions.
-
C.
B83 nuclear bomb
The B83 nuclear bomb is a high-yield U.S. thermonuclear gravity bomb designed for strategic deployment by bomber aircraft.
-
D.
B41 nuclear bomb
The B41 nuclear bomb was a high-yield, Cold War–era American thermonuclear gravity bomb and one of the most powerful nuclear weapons ever deployed by the United States.
-
E.
Castle Bravo
Castle Bravo was the United States’ first and most powerful dry-fuel thermonuclear (hydrogen) bomb test, conducted in 1954 and infamous for its unexpectedly massive yield and severe radioactive fallout.
- 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: Tsar Bomba Target entity description: Tsar Bomba was a Soviet hydrogen bomb detonated in 1961, the most powerful nuclear weapon ever tested in history.
-
A.
Ivy Mike
Ivy Mike was the first successful full-scale test of a thermonuclear (hydrogen) bomb conducted by the United States in 1952.
-
B.
B53 nuclear bomb
The B53 nuclear bomb was a high-yield, Cold War–era U.S. thermonuclear gravity bomb designed for strategic deterrence and bunker-busting missions.
-
C.
B83 nuclear bomb
The B83 nuclear bomb is a high-yield U.S. thermonuclear gravity bomb designed for strategic deployment by bomber aircraft.
-
D.
B41 nuclear bomb
The B41 nuclear bomb was a high-yield, Cold War–era American thermonuclear gravity bomb and one of the most powerful nuclear weapons ever deployed by the United States.
-
E.
Castle Bravo
Castle Bravo was the United States’ first and most powerful dry-fuel thermonuclear (hydrogen) bomb test, conducted in 1954 and infamous for its unexpectedly massive yield and severe radioactive fallout.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf | thermonuclear bomb ⓘ |
| alsoKnownAs |
AN602
ⓘ
Kuzkina Mat ⓘ RDS-220 ⓘ |
| blastRadiusSevereDamage | tens of kilometers ⓘ |
| category | superweapon ⓘ |
| countryOfOrigin | Soviet Union ⓘ |
| deliveryMethod | air-dropped bomb ⓘ |
| design | three-stage thermonuclear device ⓘ |
| designedYield | 100 megatons of TNT ⓘ |
| designer |
Andrei Sakharov
ⓘ
Yulii Khariton ⓘ |
| detonatedAt | Novaya Zemlya ⓘ |
| detonatedIn |
Soviet Arctic test range
ⓘ
linked to:
Tsar Bomba test site
|
| detonationAltitude | about 4,000 meters above ground ⓘ |
| detonationDate | 1961-10-30 ⓘ |
| developedBy | Soviet nuclear weapons program ⓘ |
| diameter | about 2.1 meters ⓘ |
| droppedFrom |
Tupolev Tu-95 bomber
ⓘ
linked to:
Tupolev Tu-95
|
| falloutReductionMethod | lead tamper instead of uranium-238 ⓘ |
| falloutType | relatively low radioactive fallout for its yield ⓘ |
| fireballDiameter | about 8 kilometers ⓘ |
| historicalSignificance | largest man-made explosion in history ⓘ |
| influenced | international calls for nuclear test bans ⓘ |
| is | most powerful nuclear weapon ever detonated ⓘ |
| length | about 8 meters ⓘ |
| locationCountryAtTestTime | Soviet Union ⓘ |
| locationCurrentCountry | Russia ⓘ |
| mass | about 27,000 kilograms ⓘ |
| maximumYield | 50 megatons of TNT ⓘ |
| mushroomCloudDiameter | about 30–40 kilometers ⓘ |
| mushroomCloudHeight | about 60 kilometers ⓘ |
| neverDeployedOperationally | true ⓘ |
| parachuteMass | about 800 kilograms ⓘ |
| parachuteRetarder | used ⓘ |
| purpose | demonstration of Soviet strategic capability ⓘ |
| relatedTreatyContext | Partial Test Ban Treaty discussions ⓘ |
| seismicMagnitude | around 5.0–5.25 ⓘ |
| shockWaveCircledEarth | multiple times ⓘ |
| symbolOf | nuclear arms race ⓘ |
| testCodeName | Ivan ⓘ |
| testedDuring | Cold War ⓘ |
| testedUnder | Nikita Khrushchev leadership ⓘ |
| testType | atmospheric nuclear test ⓘ |
| yieldComparedToHiroshima | over 3,000 times more powerful ⓘ |
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: Tsar Bomba Description of subject: Tsar Bomba was a Soviet hydrogen bomb detonated in 1961, the most powerful nuclear weapon ever tested in history.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Tsar Bomba
linked to: Tsar Bomba