Douglas B-18 Bolo
E206306
The Douglas B-18 Bolo was an American twin‑engine medium bomber of the late 1930s and early World War II, used primarily for patrol, training, and anti-submarine duties before being superseded by more advanced aircraft.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Douglas B-18 Bolo canonical | 3 |
| B-18 | 1 |
| B-18A | 1 |
| B-18B | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1692572 — 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.
Target entity: Douglas B-18 Bolo Context triple: [United States Army Air Corps, notableAircraft, Douglas B-18 Bolo]
-
A.
Boeing P-26 Peashooter
The Boeing P-26 "Peashooter" was a 1930s American monoplane fighter aircraft and the first all-metal pursuit plane to enter service with the U.S. Army Air Corps.
-
B.
Beechcraft C-45 Expeditor
The Beechcraft C-45 Expeditor is a twin-engine military transport and trainer aircraft, derived from the Beechcraft Model 18, that was widely used by the United States and allied air forces from World War II through the postwar era.
-
C.
Martin B-26 Marauder
The Martin B-26 Marauder was an American twin‑engine medium bomber used extensively by the U.S. Army Air Forces and Allies during World War II, noted for its speed, heavy armament, and demanding flight characteristics.
-
D.
North American B-25B Mitchell
The North American B-25B Mitchell is a twin‑engine medium bomber used by the United States during World War II, most famously in the 1942 Doolittle Raid on Japan.
-
E.
North American T-28 Trojan
The North American T-28 Trojan is a post–World War II U.S. military trainer aircraft that was widely used by the Air Force and Navy and later adapted for counterinsurgency and ground-attack roles.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: Douglas B-18 Bolo Target entity description: The Douglas B-18 Bolo was an American twin‑engine medium bomber of the late 1930s and early World War II, used primarily for patrol, training, and anti-submarine duties before being superseded by more advanced aircraft.
-
A.
Boeing P-26 Peashooter
The Boeing P-26 "Peashooter" was a 1930s American monoplane fighter aircraft and the first all-metal pursuit plane to enter service with the U.S. Army Air Corps.
-
B.
Beechcraft C-45 Expeditor
The Beechcraft C-45 Expeditor is a twin-engine military transport and trainer aircraft, derived from the Beechcraft Model 18, that was widely used by the United States and allied air forces from World War II through the postwar era.
-
C.
Martin B-26 Marauder
The Martin B-26 Marauder was an American twin‑engine medium bomber used extensively by the U.S. Army Air Forces and Allies during World War II, noted for its speed, heavy armament, and demanding flight characteristics.
-
D.
North American B-25B Mitchell
The North American B-25B Mitchell is a twin‑engine medium bomber used by the United States during World War II, most famously in the 1942 Doolittle Raid on Japan.
-
E.
North American T-28 Trojan
The North American T-28 Trojan is a post–World War II U.S. military trainer aircraft that was widely used by the Air Force and Navy and later adapted for counterinsurgency and ground-attack roles.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
medium bomber
ⓘ
military aircraft ⓘ twin‑engine aircraft ⓘ |
| airframeOrigin | modified Douglas DC-2 fuselage ⓘ |
| armament | machine guns in nose, dorsal, and ventral positions ⓘ |
| B-18AFeature | revised nose with bombardier position ⓘ |
| B-18BFeature | equipped for anti-submarine warfare ⓘ |
| bombLoad | up to 4,400 lb of bombs ⓘ |
| construction | all-metal monoplane ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| crew | 6 ⓘ |
| designation |
Douglas B-18 Bolo
self-linksurface differs
ⓘ
surface form:
B-18
|
| developedFrom | Douglas DC-2 ⓘ |
| engineType |
Wright R-1820 radial engine
ⓘ
surface form:
Wright R-1820 Cyclone
|
| enteredService | late 1930s ⓘ |
| era |
early World War II
ⓘ
late 1930s ⓘ |
| firstFlight | 1935 ⓘ |
| introduced | 1936 ⓘ |
| length | approximately 57 ft ⓘ |
| manufacturer | Douglas Aircraft Company ⓘ |
| maximumSpeed | about 215 mph ⓘ |
| nickname | Bolo ⓘ |
| notableUse |
Caribbean anti-submarine patrols
ⓘ
coastal patrols off North America ⓘ |
| numberBuilt | approximately 350 ⓘ |
| numberOfEngines | 2 ⓘ |
| powerplant | two Wright R-1820 radial engines ⓘ |
| primaryUser | United States Army Air Corps ⓘ |
| productionPeriod | late 1930s ⓘ |
| range | about 1,900 miles ⓘ |
| retired | late 1940s ⓘ |
| role |
anti-submarine warfare aircraft
ⓘ
maritime patrol aircraft ⓘ medium bomber ⓘ training aircraft ⓘ |
| serviceCeiling | about 23,900 ft ⓘ |
| supersededBy |
Boeing B-17 Flying Fortress
ⓘ
Martin B-26 Marauder ⓘ North American B-25B Mitchell ⓘ
surface form:
North American B-25 Mitchell
|
| usedBy |
Brazilian Air Force
ⓘ
Royal Australian Air Force ⓘ Royal Canadian Air Force ⓘ United States Army Air Corps ⓘ |
| usedInConflict | World War II ⓘ |
| variant |
Douglas B-18 Bolo
self-linksurface differs
ⓘ
surface form:
B-18A
Douglas B-18 Bolo self-linksurface differs ⓘ
surface form:
B-18B
B-18C ⓘ |
| wingspan | approximately 89 ft ⓘ |
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.
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.
Subject: Douglas B-18 Bolo Description of subject: The Douglas B-18 Bolo was an American twin‑engine medium bomber of the late 1930s and early World War II, used primarily for patrol, training, and anti-submarine duties before being superseded by more advanced aircraft.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.