Martin 4-0-4
E532891
The Martin 4-0-4 is a twin-engine piston-powered airliner introduced in the early 1950s and used by several U.S. carriers for short- to medium-haul passenger routes.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Martin 2-0-2 | 1 |
| Martin 4-0-4 canonical | 1 |
| Martin 4‑0‑4 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5551357 — 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 Context triple: [Eastern Air Lines, fleetType, Martin 4-0-4]
-
A.
Martins
Martins is a common Portuguese and Spanish surname, often used as a patronymic meaning "son of Martin."
-
B.
Martin/Martin
Martin/Martin is a structural engineering firm known for designing major projects such as sports stadiums and large commercial structures in the United States.
-
C.
Martz
Martz is a surname most notably associated with Mike Martz, an American football coach known for his innovative offensive strategies in the NFL.
-
D.
Apple Martin
Apple Martin is the daughter of actress Gwyneth Paltrow and Coldplay frontman Chris Martin, known for her occasional appearances in the media and on her parents’ social platforms.
-
E.
Mark-4
Mark-4 is a fourth-generation Jaeger classification used in the Pacific Rim universe, denoting advanced combat robots like Crimson Typhoon.
- 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 Target entity description: The Martin 4-0-4 is a twin-engine piston-powered airliner introduced in the early 1950s and used by several U.S. carriers for short- to medium-haul passenger routes.
-
A.
Martins
Martins is a common Portuguese and Spanish surname, often used as a patronymic meaning "son of Martin."
-
B.
Martin/Martin
Martin/Martin is a structural engineering firm known for designing major projects such as sports stadiums and large commercial structures in the United States.
-
C.
Martz
Martz is a surname most notably associated with Mike Martz, an American football coach known for his innovative offensive strategies in the NFL.
-
D.
Apple Martin
Apple Martin is the daughter of actress Gwyneth Paltrow and Coldplay frontman Chris Martin, known for her occasional appearances in the media and on her parents’ social platforms.
-
E.
Mark-4
Mark-4 is a fourth-generation Jaeger classification used in the Pacific Rim universe, denoting advanced combat robots like Crimson Typhoon.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
airliner
ⓘ
twin‑engine piston airliner ⓘ |
| aircraftManufacturerSeries |
Martin commercial airliners
ⓘ
linked to:
Martin 4-0-4 airliner
|
| aircraftRole | short‑ to medium‑haul passenger transport ⓘ |
| airframeMaterial | all‑metal construction ⓘ |
| cabinFeature |
overhead luggage racks
ⓘ
single‑aisle layout ⓘ |
| configuration | low‑wing monoplane ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| crew | 2 ⓘ |
| developedFrom | Martin 2-0-2 ⓘ |
| engineModel |
Pratt & Whitney R‑2800 Double Wasp
ⓘ
linked to:
Pratt & Whitney R-2800 Double Wasp
|
| engineType | piston engine ⓘ |
| enteredService | 1951 ⓘ |
| firstFlight | 1950 ⓘ |
| firstOperator |
Eastern Air Lines
ⓘ
Trans World Airlines ⓘ |
| fuselage | lengthened and strengthened compared to Martin 2-0-2 ⓘ |
| introduced | early 1950s ⓘ |
| landingGear | retractable tricycle landing gear ⓘ |
| manufacturer | Glenn L. Martin Company ⓘ |
| maximumPassengerCapacity | 40 ⓘ |
| militaryDesignation |
RM‑1
ⓘ
VC‑3A ⓘ |
| notableFeature | pressurized replacement for Martin 2-0-2 on U.S. domestic routes ⓘ |
| numberOfEngines | 2 ⓘ |
| pressurization | pressurized cabin ⓘ |
| pressurizedComparedTo |
Martin 2-0-2
ⓘ
linked to:
Martin 4-0-4
|
| primaryUsers |
Eastern Air Lines
ⓘ
Trans World Airlines ⓘ |
| productionPeriod | early 1950s ⓘ |
| propulsion | propeller‑driven ⓘ |
| status | retired from airline service ⓘ |
| successorInServiceRole | turboprop and early jet airliners ⓘ |
| tailConfiguration | conventional tail unit ⓘ |
| typicalPassengerCapacity | 40 ⓘ |
| typicalUse |
medium‑haul domestic routes
ⓘ
short‑haul domestic routes ⓘ |
| usedBy |
Eastern Air Lines
ⓘ
Mohawk Airlines ⓘ Pacific Air Lines ⓘ Piedmont Airlines ⓘ Southern Airways ⓘ Trans World Airlines ⓘ United States Coast Guard ⓘ United States Navy ⓘ |
| wing | strengthened compared to Martin 2-0-2 ⓘ |
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 Description of subject: The Martin 4-0-4 is a twin-engine piston-powered airliner introduced in the early 1950s and used by several U.S. carriers for short- to medium-haul passenger routes.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.