390th Air Service Group
E353094
The 390th Air Service Group was a United States Army Air Forces support unit in World War II that provided maintenance, supply, and service functions for the 509th Composite Group, the unit that carried out the atomic bomb missions over Japan.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 390th Air Service Group canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3358156 — 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: 390th Air Service Group Context triple: [509th Composite Group, component, 390th Air Service Group]
-
A.
509th Composite Group
The 509th Composite Group was the U.S. Army Air Forces unit specially formed during World War II to conduct atomic bomb missions, including the deployment of the "Fat Man" bomb over Nagasaki.
-
B.
412th Operations Group
The 412th Operations Group is a U.S. Air Force unit at Edwards Air Force Base responsible for planning, executing, and supporting flight test and evaluation missions for advanced aerospace systems.
-
C.
393d Bombardment Squadron
The 393d Bombardment Squadron was a U.S. Army Air Forces unit best known for flying the B-29 bombers that carried out the atomic bombings of Hiroshima and Nagasaki during World War II.
-
D.
97th Bombardment Group
The 97th Bombardment Group was a U.S. Army Air Forces unit in World War II, notable as one of the first American heavy bomber groups to operate in the European Theater.
-
E.
310th Operations Group
The 310th Operations Group is a U.S. Space Force unit responsible for space operations and support, including satellite command and control, under the 310th Space Wing.
- 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: 390th Air Service Group Target entity description: The 390th Air Service Group was a United States Army Air Forces support unit in World War II that provided maintenance, supply, and service functions for the 509th Composite Group, the unit that carried out the atomic bomb missions over Japan.
-
A.
509th Composite Group
The 509th Composite Group was the U.S. Army Air Forces unit specially formed during World War II to conduct atomic bomb missions, including the deployment of the "Fat Man" bomb over Nagasaki.
-
B.
412th Operations Group
The 412th Operations Group is a U.S. Air Force unit at Edwards Air Force Base responsible for planning, executing, and supporting flight test and evaluation missions for advanced aerospace systems.
-
C.
393d Bombardment Squadron
The 393d Bombardment Squadron was a U.S. Army Air Forces unit best known for flying the B-29 bombers that carried out the atomic bombings of Hiroshima and Nagasaki during World War II.
-
D.
97th Bombardment Group
The 97th Bombardment Group was a U.S. Army Air Forces unit in World War II, notable as one of the first American heavy bomber groups to operate in the European Theater.
-
E.
310th Operations Group
The 310th Operations Group is a U.S. Space Force unit responsible for space operations and support, including satellite command and control, under the 310th Space Wing.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
United States Army Air Forces unit
ⓘ
air service group ⓘ |
| allegiance | United States Army ⓘ |
| associatedEvent |
atomic bombing of Hiroshima
ⓘ
surface form:
Hiroshima atomic bombing
atomic bombing of Nagasaki ⓘ
surface form:
Nagasaki atomic bombing
|
| branch | United States Army Air Forces ⓘ |
| category |
United States Army Air Forces
ⓘ
surface form:
United States Army Air Forces groups
World War II air service groups of the United States ⓘ |
| componentUnit |
1027th Materiel Squadron
ⓘ
surface form:
1027th Air Materiel Squadron
603d Air Engineering Squadron ⓘ Headquarters and Base Services Squadron ⓘ |
| conflict | World War II ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| disbanded | post–World War II ⓘ |
| equipmentHandled |
B-29 spare parts
ⓘ
ground support equipment ⓘ |
| era |
World War II
ⓘ
surface form:
World War II era
|
| function |
aircraft repair
ⓘ
base services ⓘ logistics ⓘ supply distribution ⓘ |
| garrison | North Field, Tinian ⓘ |
| location |
Tinian
ⓘ
surface form:
Tinian, Mariana Islands
|
| mission | provide maintenance, supply, and service functions ⓘ |
| notableAssociation | Manhattan Project ⓘ |
| notableFor | supporting the 509th Composite Group ⓘ |
| oversaw | aircraft maintenance schedules ⓘ |
| partOf | Twentieth Air Force ⓘ |
| primaryResponsibility | keep 509th Composite Group aircraft operational ⓘ |
| providedService |
fuel supply support
ⓘ
ordnance handling support ⓘ transport and logistics support ⓘ |
| role |
aircraft maintenance support
ⓘ
service support ⓘ supply support ⓘ |
| supportedAircraftType | B-29 Superfortress ⓘ |
| supportedMissionType |
special weapons delivery
ⓘ
strategic bombing ⓘ |
| supportedOperation | atomic bomb missions over Japan ⓘ |
| supportedUnit |
393d Bombardment Squadron
ⓘ
509th Composite Group ⓘ |
| supportedWeapon |
Fat Man
ⓘ
surface form:
Fat Man atomic bomb
Little Boy ⓘ
surface form:
Little Boy atomic bomb
|
| theater |
Pacific Theater of Operations
ⓘ
surface form:
Pacific Theater
|
| type | support group ⓘ |
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: 390th Air Service Group Description of subject: The 390th Air Service Group was a United States Army Air Forces support unit in World War II that provided maintenance, supply, and service functions for the 509th Composite Group, the unit that carried out the atomic bomb missions over Japan.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.