Napier Lion
E251808
The Napier Lion was a powerful British W12 aircraft engine widely used in high-performance military and racing aircraft during the 1920s and early 1930s.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Napier Lion canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2263580 — 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: Napier Lion Context triple: [Supermarine S.6, engineType, Napier Lion]
-
A.
Oryx
Oryx is a mysterious and resilient woman in Margaret Atwood’s dystopian novel "Oryx and Crake," whose traumatic past and complex relationships profoundly shape the story’s emotional and ethical core.
-
B.
Oliphant
Oliphant is a surname most notably associated with Australian physicist Sir Mark Oliphant, a pioneer in nuclear physics and radar technology.
-
C.
Lion
Lion is a 2016 biographical drama film about an Indian boy separated from his family and adopted in Australia who later uses Google Earth to find his way home.
-
D.
Lion
Lion was a prominent warship of the Royal Scots Navy, recognized for its significant role in Scotland’s early modern naval history.
-
E.
Belgian lion
The Belgian lion is a heraldic symbol representing strength and sovereignty, prominently used as the national emblem of Belgium.
- 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: Napier Lion Target entity description: The Napier Lion was a powerful British W12 aircraft engine widely used in high-performance military and racing aircraft during the 1920s and early 1930s.
-
A.
Oryx
Oryx is a mysterious and resilient woman in Margaret Atwood’s dystopian novel "Oryx and Crake," whose traumatic past and complex relationships profoundly shape the story’s emotional and ethical core.
-
B.
Oliphant
Oliphant is a surname most notably associated with Australian physicist Sir Mark Oliphant, a pioneer in nuclear physics and radar technology.
-
C.
Lion
Lion is a 2016 biographical drama film about an Indian boy separated from his family and adopted in Australia who later uses Google Earth to find his way home.
-
D.
Lion
Lion was a prominent warship of the Royal Scots Navy, recognized for its significant role in Scotland’s early modern naval history.
-
E.
Belgian lion
The Belgian lion is a heraldic symbol representing strength and sovereignty, prominently used as the national emblem of Belgium.
- F. None of above. chosen
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
aircraft engine
ⓘ
piston engine ⓘ water-cooled engine ⓘ |
| bore | 5 inches ⓘ |
| coolingSystem | liquid-cooled ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| cylinderArrangement | three banks of four cylinders ⓘ |
| cylinderCount | 12 ⓘ |
| designFeature |
aluminium alloy crankcase
ⓘ
compact broad-arrow W layout ⓘ integral reduction gear on some variants ⓘ separate cylinder blocks ⓘ |
| displacement | about 24 litres ⓘ |
| engineConfiguration |
Volkswagen Group W12
ⓘ
surface form:
W12
|
| enteredService | 1918 ⓘ |
| era |
1920s
ⓘ
1930s ⓘ |
| firstRunDate | 1917 ⓘ |
| fuelType | aviation gasoline ⓘ |
| manufacturer | D. Napier & Son ⓘ |
| notableApplication |
Airco DH.9A
ⓘ
Fairey IIIF ⓘ Gloster IV ⓘ Supermarine S.5 ⓘ Supermarine S.6 ⓘ Vickers Vimy ⓘ
surface form:
Vickers Vimy Commercial
|
| notableRecord |
powered aircraft to distance and altitude records
ⓘ
powered aircraft to several world airspeed records in the 1920s ⓘ |
| notableVariant |
Lion II
ⓘ
Lion III ⓘ Lion V ⓘ Napier Lion VIIA ⓘ
surface form:
Lion VIIB
Lion XI ⓘ |
| peakUsePeriod |
early 1920s
ⓘ
early 1930s ⓘ late 1920s ⓘ |
| powerOutput |
450 horsepower class (early versions)
ⓘ
over 1,000 horsepower (highly boosted racing versions) ⓘ |
| status | obsolete ⓘ |
| stroke | 5.5 inches ⓘ |
| successor |
Napier Rapier
ⓘ
surface form:
Napier Dagger
Napier Rapier ⓘ |
| usedBy |
Royal Air Force
ⓘ
Fleet Air Arm ⓘ
surface form:
Royal Navy Fleet Air Arm
|
| usedFor |
Schneider Trophy competition
ⓘ
surface form:
Schneider Trophy seaplane races
long-distance record flights ⓘ world speed record attempts ⓘ |
| usedIn |
military aircraft
ⓘ
racing aircraft ⓘ record-breaking aircraft ⓘ |
| valvesPerCylinder | four ⓘ |
| valvetrain | dual overhead camshafts per bank ⓘ |
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: Napier Lion Description of subject: The Napier Lion was a powerful British W12 aircraft engine widely used in high-performance military and racing aircraft during the 1920s and early 1930s.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.