Poseidon missile system
E796083
The Poseidon missile system was a U.S. Navy submarine-launched ballistic missile (SLBM) developed during the Cold War, featuring multiple independently targetable reentry vehicles (MIRVs) to enhance nuclear deterrence.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Poseidon missile system canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9387464 — 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: Poseidon missile system Context triple: [Polaris missile system, replacedBy, Poseidon missile system]
-
A.
Polaris missile system
The Polaris missile system was an early U.S. submarine-launched ballistic missile (SLBM) program that provided a key component of the nation's nuclear deterrent during the Cold War.
-
B.
Trident nuclear missile system
The Trident nuclear missile system is the United Kingdom’s submarine-launched ballistic missile-based nuclear deterrent, carried by its Vanguard-class submarines as the core of its strategic defense.
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C.
Arrow missile system
The Arrow missile system is an Israeli-developed, long-range, anti-ballistic missile defense system designed to intercept and destroy incoming ballistic missiles outside the Earth’s atmosphere.
-
D.
Redstone missile family
The Redstone missile family comprises early U.S. Army short-range ballistic missiles and their derivatives, which played a key role in both military deployment and the beginnings of American crewed spaceflight.
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E.
Sky Bow missile system
The Sky Bow missile system is a Taiwanese-developed surface-to-air defense system designed to intercept aircraft and ballistic missiles.
- 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: Poseidon missile system Target entity description: The Poseidon missile system was a U.S. Navy submarine-launched ballistic missile (SLBM) developed during the Cold War, featuring multiple independently targetable reentry vehicles (MIRVs) to enhance nuclear deterrence.
-
A.
Polaris missile system
The Polaris missile system was an early U.S. submarine-launched ballistic missile (SLBM) program that provided a key component of the nation's nuclear deterrent during the Cold War.
-
B.
Trident nuclear missile system
The Trident nuclear missile system is the United Kingdom’s submarine-launched ballistic missile-based nuclear deterrent, carried by its Vanguard-class submarines as the core of its strategic defense.
-
C.
Arrow missile system
The Arrow missile system is an Israeli-developed, long-range, anti-ballistic missile defense system designed to intercept and destroy incoming ballistic missiles outside the Earth’s atmosphere.
-
D.
Redstone missile family
The Redstone missile family comprises early U.S. Army short-range ballistic missiles and their derivatives, which played a key role in both military deployment and the beginnings of American crewed spaceflight.
-
E.
Sky Bow missile system
The Sky Bow missile system is a Taiwanese-developed surface-to-air defense system designed to intercept aircraft and ballistic missiles.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
U.S. Navy weapon system
ⓘ
strategic nuclear weapon ⓘ submarine-launched ballistic missile ⓘ |
| abbreviation | MIRV NERFINISHED ⓘ |
| basingMode | submarine-based ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| deploymentConcept | sea-based strategic deterrent ⓘ |
| deploymentStart | 1971 ⓘ |
| designedBy | Lockheed Missiles and Space Company NERFINISHED ⓘ |
| designedFor | second-strike capability ⓘ |
| developedBy | United States Navy NERFINISHED ⓘ |
| diameter |
about 1.88 meters
ⓘ
about 74 inches ⓘ |
| era | Cold War era ⓘ |
| feature | multiple independently targetable reentry vehicles ⓘ |
| guidanceSystem | inertial guidance ⓘ |
| hasAcronym | UGM-73 NERFINISHED ⓘ |
| hasNATOReportingName | C-3 NERFINISHED ⓘ |
| hasVariant | UGM-73A NERFINISHED ⓘ |
| improvementOver |
Polaris missile in accuracy
ⓘ
Polaris missile in payload capacity ⓘ |
| launchMode | submerged launch ⓘ |
| launchPlatform |
Benjamin Franklin-class submarine
NERFINISHED
ⓘ
James Madison-class submarine NERFINISHED ⓘ Lafayette-class submarine NERFINISHED ⓘ Ohio-class submarine NERFINISHED ⓘ ballistic missile submarine ⓘ |
| length |
about 10.4 meters
ⓘ
about 34 feet ⓘ |
| missionType | strategic strike ⓘ |
| nuclearTriadComponent | sea-based leg of U.S. nuclear triad ⓘ |
| numberOfWarheadsPerMissile | up to 10 MIRV warheads ⓘ |
| operator | United States Navy ⓘ |
| payload | MIRVed reentry vehicles ⓘ |
| predecessor | Polaris missile system NERFINISHED ⓘ |
| propulsionType | two-stage solid-fuel rocket ⓘ |
| range |
approximately 2500 nautical miles
ⓘ
approximately 4600 kilometers ⓘ |
| replaced | Polaris A-3 missile on U.S. SSBNs NERFINISHED ⓘ |
| retirementPeriod | 1990s ⓘ |
| role | nuclear deterrent ⓘ |
| serviceBranch | United States Navy ⓘ |
| serviceEntry | early 1970s ⓘ |
| successor | Trident I C4 missile NERFINISHED ⓘ |
| usedInConflict | Cold War NERFINISHED ⓘ |
| warheadType | thermonuclear warhead ⓘ |
| warheadYield | approximately 40 kilotons per warhead ⓘ |
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: Poseidon missile system Description of subject: The Poseidon missile system was a U.S. Navy submarine-launched ballistic missile (SLBM) developed during the Cold War, featuring multiple independently targetable reentry vehicles (MIRVs) to enhance nuclear deterrence.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.