Smiling Buddha
E591093
Smiling Buddha was India’s first successful nuclear test, conducted in 1974 at Pokhran and marking the country’s entry into the group of nuclear-capable states.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Smiling Buddha canonical | 5 |
| 1974 Indian nuclear test Smiling Buddha | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6399541 — 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: Smiling Buddha Context triple: [Pokhran-II nuclear tests, precededBy, Smiling Buddha]
-
A.
Tsar Bomba
Tsar Bomba was a Soviet hydrogen bomb detonated in 1961, the most powerful nuclear weapon ever tested in history.
-
B.
B83 nuclear bomb
The B83 nuclear bomb is a high-yield U.S. thermonuclear gravity bomb designed for strategic deployment by bomber aircraft.
-
C.
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.
-
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.
Ivy Mike
Ivy Mike was the first successful full-scale test of a thermonuclear (hydrogen) bomb conducted by the United States in 1952.
- 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: Smiling Buddha Target entity description: Smiling Buddha was India’s first successful nuclear test, conducted in 1974 at Pokhran and marking the country’s entry into the group of nuclear-capable states.
-
A.
Tsar Bomba
Tsar Bomba was a Soviet hydrogen bomb detonated in 1961, the most powerful nuclear weapon ever tested in history.
-
B.
B83 nuclear bomb
The B83 nuclear bomb is a high-yield U.S. thermonuclear gravity bomb designed for strategic deployment by bomber aircraft.
-
C.
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.
-
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.
Ivy Mike
Ivy Mike was the first successful full-scale test of a thermonuclear (hydrogen) bomb conducted by the United States in 1952.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | nuclear test ⓘ |
| alsoKnownAs |
Pokhran-I
ⓘ
linked to:
Pokhran-I nuclear test
|
| authorizedBy | Indira Gandhi ⓘ |
| codename | Smiling Buddha ⓘ |
| conductedBy |
Bhabha Atomic Research Centre
ⓘ
Government of India ⓘ Indian Army ⓘ |
| continent | Asia ⓘ |
| country | India ⓘ |
| countryStatusAfterTest | de facto nuclear weapons state ⓘ |
| coverStory | described as a peaceful nuclear explosion by Indian officials ⓘ |
| date | 1974-05-18 ⓘ |
| deviceCoreMaterial | plutonium ⓘ |
| deviceType | plutonium implosion device ⓘ |
| followedBy |
Pokhran-II
ⓘ
linked to:
Pokhran-II nuclear tests
|
| impactOnPolicy | accelerated India’s strategic nuclear program ⓘ |
| impactOnSecurityDoctrine | laid groundwork for India’s later declared nuclear weapons status ⓘ |
| IndiraGandhiRole | Prime Minister of India ⓘ |
| internationalReaction |
contributed to formation and strengthening of Nuclear Suppliers Group
ⓘ
led to criticism from some Western countries ⓘ |
| locationType | Thar Desert ⓘ |
| militaryInvolvement | Indian Army Corps of Engineers ⓘ |
| nonProliferationContext | conducted while India was not a signatory to the Nuclear Non-Proliferation Treaty ⓘ |
| peacefulNuclearExplosionClaim | yes ⓘ |
| politicalLeaderAtTime | Indira Gandhi ⓘ |
| precededBy | Indian civilian nuclear energy program ⓘ |
| programContext |
Indian nuclear weapons program
ⓘ
linked to:
Indian nuclear programme
|
| region | Rajasthan ⓘ |
| relatedOrganization |
Bhabha Atomic Research Centre
ⓘ
Department of Atomic Energy (India) ⓘ |
| relatedPerson |
Homi N. Sethna
ⓘ
Indira Gandhi ⓘ Raja Ramanna ⓘ |
| secrecyLevel | highly secret operation ⓘ |
| significance |
first successful nuclear test by India
ⓘ
marked India’s entry into the group of nuclear-capable states ⓘ |
| supervisedBy |
Homi N. Sethna
ⓘ
Raja Ramanna ⓘ |
| technologyOrigin | indigenously developed in India ⓘ |
| testEnvironment | underground ⓘ |
| testMethod | shaft detonation ⓘ |
| testPurpose | demonstration of nuclear capability ⓘ |
| testShaftDepth | approximately 107 meters ⓘ |
| testSite | Pokhran Test Range ⓘ |
| testSiteLocation |
Pokhran, Rajasthan, India
ⓘ
linked to:
Pokhran Test Range
|
| year | 1974 ⓘ |
| yield | approximately 8 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: Smiling Buddha Description of subject: Smiling Buddha was India’s first successful nuclear test, conducted in 1974 at Pokhran and marking the country’s entry into the group of nuclear-capable states.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Smiling Buddha