S2W
E886290
S2W is a U.S. Navy submarine nuclear reactor plant design used to power early nuclear-powered submarines.
All labels observed (1)
| Label | Occurrences |
|---|---|
| S2W canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10778324 — 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: S2W Context triple: [S2W nuclear reactor, designationScheme, S2W]
-
A.
S2
S2 is a line of Berlin's S-Bahn rapid transit network that connects northern and southern suburbs through the city center.
-
B.
S2
S2 is one of the commuter rail lines of the Nuremberg S-Bahn network in Germany, serving suburban and regional routes around the city.
-
C.
S2
S2 is a commuter rail line within Germany’s Rhine-Ruhr S-Bahn network, connecting various cities and suburbs in the densely populated Rhine-Ruhr metropolitan region.
-
D.
S2
S2 is a line of the Munich S-Bahn rapid transit network that runs through the central trunk route and serves suburban areas around Munich.
-
E.
S2
S2 is a commuter rail line of the Stuttgart S-Bahn network serving the Stuttgart metropolitan area in Germany.
- 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: S2W Target entity description: S2W is a U.S. Navy submarine nuclear reactor plant design used to power early nuclear-powered submarines.
-
A.
S2
S2 is a line of Berlin's S-Bahn rapid transit network that connects northern and southern suburbs through the city center.
-
B.
S2
S2 is one of the commuter rail lines of the Nuremberg S-Bahn network in Germany, serving suburban and regional routes around the city.
-
C.
S2
S2 is a commuter rail line within Germany’s Rhine-Ruhr S-Bahn network, connecting various cities and suburbs in the densely populated Rhine-Ruhr metropolitan region.
-
D.
S2
S2 is a line of the Munich S-Bahn rapid transit network that runs through the central trunk route and serves suburban areas around Munich.
-
E.
S2
S2 is a commuter rail line of the Stuttgart S-Bahn network serving the Stuttgart metropolitan area in Germany.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
naval nuclear reactor plant design
ⓘ
pressurized water reactor ⓘ |
| application | submerged high-endurance operation ⓘ |
| coolant | light water ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| designationMeaning_2 | second generation core or design from the contractor ⓘ |
| designationMeaning_S | submarine platform ⓘ |
| designationMeaning_W | Westinghouse as prime contractor ⓘ |
| designationSystem | U.S. Navy submarine reactor designation system ⓘ |
| developedBy | Westinghouse Electric Corporation ⓘ |
| developedFor | United States Navy ⓘ |
| enables | extended submerged endurance compared to diesel-electric submarines ⓘ |
| era | early nuclear submarine era ⓘ |
| fuelType | enriched uranium ⓘ |
| moderator | light water ⓘ |
| operator | United States Navy ⓘ |
| partOf | U.S. Navy nuclear propulsion program ⓘ |
| powerSource | nuclear fission ⓘ |
| propulsionType | nuclear marine propulsion ⓘ |
| reactorType | pressurized water reactor ⓘ |
| relatedTo |
S1W
ⓘ
S5W ⓘ |
| safetyFeature |
containment within submarine pressure hull
ⓘ
multiple coolant loops ⓘ |
| status | obsolete design ⓘ |
| successor | S5W ⓘ |
| usedBy |
U.S. Navy nuclear submarine force
ⓘ
linked to:
United States Submarine Force
|
| usedFor | propulsion of nuclear-powered submarines ⓘ |
| usedIn |
USS Nautilus (SSN-571)
ⓘ
linked to:
USS Nautilus
early U.S. Navy nuclear submarines ⓘ |
| usedInConflict | Cold War era naval operations ⓘ |
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: S2W Description of subject: S2W is a U.S. Navy submarine nuclear reactor plant design used to power early nuclear-powered submarines.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.