Upkeep
E229757
Upkeep was the codename for the British World War II bouncing bomb designed by Barnes Wallis and used by the RAF’s 617 Squadron in the 1943 Dambusters raid.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Upkeep bomb | 4 |
| Upkeep canonical | 3 |
| Upkeep mine | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2033549 — 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: Upkeep Context triple: [Upkeep bouncing bomb, alsoKnownAs, Upkeep]
-
A.
Heed
Heed is the fiercely loyal yet conflicted protagonist of Toni Morrison’s novel "Love," whose lifelong bond and rivalry with her friend Christine drive much of the story’s emotional and thematic tension.
-
B.
Outer Ward
The Outer Ward is the defensive outer enclosure of the Tower of London, consisting of walls, towers, and fortifications that formed the first line of the castle’s protection.
-
C.
Ossuccio
Ossuccio is a small lakeside locality on the western shore of Lake Como in northern Italy, known for its scenic setting opposite the historic Isola Comacina.
-
D.
Upstart
Upstart is an event-based init daemon developed for Linux systems to manage services and system startup and shutdown.
-
E.
Meliora
Meliora is the Latin motto of the University of Rochester, commonly interpreted as meaning “ever better” or “always better.”
- 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: Upkeep Target entity description: Upkeep was the codename for the British World War II bouncing bomb designed by Barnes Wallis and used by the RAF’s 617 Squadron in the 1943 Dambusters raid.
-
A.
Heed
Heed is the fiercely loyal yet conflicted protagonist of Toni Morrison’s novel "Love," whose lifelong bond and rivalry with her friend Christine drive much of the story’s emotional and thematic tension.
-
B.
Outer Ward
The Outer Ward is the defensive outer enclosure of the Tower of London, consisting of walls, towers, and fortifications that formed the first line of the castle’s protection.
-
C.
Ossuccio
Ossuccio is a small lakeside locality on the western shore of Lake Como in northern Italy, known for its scenic setting opposite the historic Isola Comacina.
-
D.
Upstart
Upstart is an event-based init daemon developed for Linux systems to manage services and system startup and shutdown.
-
E.
Meliora
Meliora is the Latin motto of the University of Rochester, commonly interpreted as meaning “ever better” or “always better.”
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
British military weapon
ⓘ
World War II weapon ⓘ bouncing bomb ⓘ |
| associatedOperation | attacks on Ruhr dams ⓘ |
| associatedPerson | Guy Gibson ⓘ |
| category |
aerial bombs of the United Kingdom
ⓘ
anti-dam weapons ⓘ bouncing bombs ⓘ |
| codenameFor | British World War II bouncing bomb ⓘ |
| conflict | World War II ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| deliveryMethod | air-dropped bomb ⓘ |
| deploymentEnvironment | low-level night bombing ⓘ |
| designedBy | Barnes Wallis ⓘ |
| designerEmployer | Vickers-Armstrongs ⓘ |
| designerOccupation | aeronautical engineer ⓘ |
| designFeature |
bouncing over water surface
ⓘ
hydrostatic fuzes ⓘ spinning cylindrical bomb body ⓘ |
| designGoal | breach large concrete dams ⓘ |
| developmentContext | British strategic bombing campaign ⓘ |
| era | 1940s ⓘ |
| guidanceSystem | unguided ⓘ |
| launchPlatform |
Avro Lancaster
ⓘ
surface form:
Avro Lancaster bomber
|
| launchPlatformVariant |
Avro Lancaster
ⓘ
surface form:
Avro Lancaster B Mark III Special
|
| materialEffect |
damage to German industrial infrastructure
ⓘ
flooding of Ruhr valley ⓘ |
| mediaDepiction |
The Dam Busters (1955 film)
ⓘ
surface form:
film The Dam Busters
|
| munitionType | special weapon ⓘ |
| namedAfter | British wartime codename convention ⓘ |
| notableFor | use in the Dambusters raid ⓘ |
| notableUnit | No. 617 Squadron RAF ⓘ |
| operatedBy | Bomber Command ⓘ |
| operationalStatus | retired ⓘ |
| primaryTarget |
Eder Dam
ⓘ
Möhne Dam ⓘ Sorpe Dam ⓘ |
| primaryTargetType | dams ⓘ |
| propulsion | gravity bomb ⓘ |
| testCountry | United Kingdom ⓘ |
| testLocation |
Chesil Beach
ⓘ
Reculver, Kent ⓘ
surface form:
Reculver
|
| usedBy |
No. 617 Squadron RAF
ⓘ
Royal Air Force ⓘ |
| usedIn |
The Dam Busters (book)
ⓘ
surface form:
Dambusters raid
Operation Chastise ⓘ |
| yearOfFirstUse | 1943 ⓘ |
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: Upkeep Description of subject: Upkeep was the codename for the British World War II bouncing bomb designed by Barnes Wallis and used by the RAF’s 617 Squadron in the 1943 Dambusters raid.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Upkeep bomb
this entity surface form:
Upkeep bomb
subject surface form:
Barnes Wallis
this entity surface form:
Upkeep bomb
subject surface form:
Barnes Wallis
this entity surface form:
Upkeep bomb
this entity surface form:
Upkeep mine