Martin 139
E937110
The Martin 139 is an American twin‑engine medium bomber aircraft developed in the 1930s and exported widely, including to the Netherlands and other foreign air forces, where it saw combat in the early stages of World War II.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Martin 139 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11617703 — 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 139 Context triple: [Wright R-1820, usedOnAircraft, Martin 139]
-
A.
Martinho
Martinho is a given name, commonly used in Portuguese-speaking countries, that is related to the name Martín.
-
B.
Martz
Martz is a surname most notably associated with Mike Martz, an American football coach known for his innovative offensive strategies in the NFL.
-
C.
Martin 4-0-4
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.
-
D.
Martins
Martins is a common Portuguese and Spanish surname, often used as a patronymic meaning "son of Martin."
-
E.
Martis
Martis is a small town and comune in the Gallura region of northern Sardinia, Italy.
- 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 139 Target entity description: The Martin 139 is an American twin‑engine medium bomber aircraft developed in the 1930s and exported widely, including to the Netherlands and other foreign air forces, where it saw combat in the early stages of World War II.
-
A.
Martinho
Martinho is a given name, commonly used in Portuguese-speaking countries, that is related to the name Martín.
-
B.
Martz
Martz is a surname most notably associated with Mike Martz, an American football coach known for his innovative offensive strategies in the NFL.
-
C.
Martin 4-0-4
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.
-
D.
Martins
Martins is a common Portuguese and Spanish surname, often used as a patronymic meaning "son of Martin."
-
E.
Martis
Martis is a small town and comune in the Gallura region of northern Sardinia, Italy.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
military aircraft
ⓘ
twin‑engine medium bomber aircraft ⓘ |
| aircraftConfiguration | low‑wing monoplane ⓘ |
| aircraftEra |
early World War II
ⓘ
interwar period ⓘ |
| aircraftRole | medium bomber ⓘ |
| aircraftType | land‑based bomber ⓘ |
| alsoKnownAs | Martin Model 139 ⓘ |
| armamentType |
bombs
ⓘ
machine guns ⓘ |
| category | 1930s United States bomber aircraft ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| crewSize |
3
ⓘ
4 ⓘ |
| designFeature |
all‑metal construction
ⓘ
enclosed cockpit ⓘ internal bomb bay ⓘ |
| developedFrom | Martin B‑10 ⓘ |
| developedInDecade | 1930s ⓘ |
| engineType | piston engine ⓘ |
| enteredServiceInDecade | 1930s ⓘ |
| exportedTo |
China
ⓘ
Netherlands ⓘ Netherlands East Indies ⓘ
linked to:
Dutch East Indies
Soviet Union ⓘ Thailand ⓘ other foreign air forces ⓘ |
| firstFlight | 1930s ⓘ |
| landingGearType | retractable landing gear ⓘ |
| manufacturer | Glenn L. Martin Company ⓘ |
| numberOfEngines | 2 ⓘ |
| operator |
Chinese Air Force
ⓘ
Royal Netherlands East Indies Army Air Force ⓘ
linked to:
Netherlands East Indies air units
Royal Thai Air Force ⓘ Soviet Air Force ⓘ
linked to:
Soviet Air Forces
|
| powerplantManufacturer | Wright ⓘ |
| relatedAircraft |
Martin B‑10B
ⓘ
linked to:
Martin B‑10
|
| sawCombatAgainst |
Imperial Japanese forces
ⓘ
linked to:
Japanese forces
|
| sawCombatIn | early stages of World War II ⓘ |
| sawCombatRegion |
Netherlands East Indies
ⓘ
linked to:
Dutch East Indies
Southeast Asia ⓘ |
| usedBy | Allied forces ⓘ |
| usedFor |
level bombing
ⓘ
maritime strike ⓘ |
| usedInConflict | World War II ⓘ |
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 139 Description of subject: The Martin 139 is an American twin‑engine medium bomber aircraft developed in the 1930s and exported widely, including to the Netherlands and other foreign air forces, where it saw combat in the early stages of World War II.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Wright R-1820 radial engine