Martin 4-0-4 airliner
E770603
The Martin 4-0-4 airliner is a twin-engine, short- to medium-range piston-powered passenger aircraft introduced in the early 1950s and used primarily by U.S. regional and feeder airlines.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Martin 4-0-4 airliner canonical | 1 |
| Martin commercial airliners | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8966327 — 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: Martin 4-0-4 airliner Context triple: [Glenn L. Martin Company, product, Martin 4-0-4 airliner]
-
A.
Martin 2-0-2 airliner
The Martin 2-0-2 airliner was a post–World War II American twin-engine short- to medium-range passenger aircraft designed for commercial airline service.
-
B.
Vickers Viscount airliner
The Vickers Viscount airliner was a pioneering British turboprop passenger aircraft renowned for its smooth, quiet operation and widespread use by airlines worldwide in the 1950s and 1960s.
-
C.
Handley Page Jetstream
The Handley Page Jetstream is a British twin-turboprop regional airliner and utility aircraft designed in the 1960s for short-haul commuter and feeder airline services.
-
D.
Convair 440
The Convair 440 is a twin-engine, short- to medium-range commercial airliner developed in the 1950s as an improved, pressurized variant of Convair’s successful series of piston-powered passenger aircraft.
-
E.
Boeing Model 414
The Boeing Model 414 is the internal company designation for the CH-47 Chinook series of twin‑engine, tandem-rotor heavy-lift military helicopters.
- 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: Martin 4-0-4 airliner Target entity description: The Martin 4-0-4 airliner is a twin-engine, short- to medium-range piston-powered passenger aircraft introduced in the early 1950s and used primarily by U.S. regional and feeder airlines.
-
A.
Martin 2-0-2 airliner
The Martin 2-0-2 airliner was a post–World War II American twin-engine short- to medium-range passenger aircraft designed for commercial airline service.
-
B.
Vickers Viscount airliner
The Vickers Viscount airliner was a pioneering British turboprop passenger aircraft renowned for its smooth, quiet operation and widespread use by airlines worldwide in the 1950s and 1960s.
-
C.
Handley Page Jetstream
The Handley Page Jetstream is a British twin-turboprop regional airliner and utility aircraft designed in the 1960s for short-haul commuter and feeder airline services.
-
D.
Convair 440
The Convair 440 is a twin-engine, short- to medium-range commercial airliner developed in the 1950s as an improved, pressurized variant of Convair’s successful series of piston-powered passenger aircraft.
-
E.
Boeing Model 414
The Boeing Model 414 is the internal company designation for the CH-47 Chinook series of twin‑engine, tandem-rotor heavy-lift military helicopters.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
airliner
ⓘ
twin-engine piston airliner ⓘ |
| aircraftCategory | civil transport aircraft ⓘ |
| aircraftConfiguration | low-wing monoplane ⓘ |
| aircraftEra | post-World War II ⓘ |
| aircraftRole | short- to medium-range passenger transport ⓘ |
| aircraftType | fixed-wing aircraft ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| crew | 2 pilots ⓘ |
| designedFor |
medium-haul routes
ⓘ
short-haul routes ⓘ |
| developedFrom | Martin 2-0-2 ⓘ |
| engineType | piston engine ⓘ |
| enteredServiceDecade | 1950s ⓘ |
| firstFlight | 1950 ⓘ |
| fuselageType | all-metal construction ⓘ |
| introduced | early 1950s ⓘ |
| landingGear | retractable tricycle landing gear ⓘ |
| manufacturer | Glenn L. Martin Company ⓘ |
| marketedAs | regional airliner ⓘ |
| numberOfEngines | 2 ⓘ |
| operatedIn | North America ⓘ |
| powerplant | two radial piston engines ⓘ |
| pressurization | pressurized cabin ⓘ |
| primaryUsers |
U.S. feeder airlines
ⓘ
U.S. regional airlines ⓘ |
| propulsion | propeller-driven ⓘ |
| typicalRange | short- to medium-range ⓘ |
| usedFor |
airline service
ⓘ
passenger transport ⓘ |
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: Martin 4-0-4 airliner Description of subject: The Martin 4-0-4 airliner is a twin-engine, short- to medium-range piston-powered passenger aircraft introduced in the early 1950s and used primarily by U.S. regional and feeder airlines.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Martin 4-0-4 airliner