Operation Source
E530121
Operation Source was a British World War II midget-submarine attack aimed at crippling the German battleship Tirpitz in a Norwegian fjord.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Operation Source canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5525676 — 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: Operation Source Context triple: [Tirpitz, subjectOfOperation, Operation Source]
-
A.
Operation MI
Operation MI was the Imperial Japanese Navy’s World War II plan to seize Midway Atoll, culminating in the pivotal Battle of Midway in June 1942.
-
B.
Operation Mandrel
Operation Mandrel was a series of U.S. nuclear weapons tests conducted during the Cold War as part of the broader American nuclear testing program.
-
C.
Operation Banner
Operation Banner was the British Army’s long-running military deployment in Northern Ireland during the Troubles, focused on counterinsurgency and internal security operations.
-
D.
Operation Galvanic
Operation Galvanic was the U.S. amphibious offensive in November 1943 that launched the Gilbert Islands campaign in the central Pacific, including the bloody Battle of Tarawa, during World War II.
-
E.
Operation Hiram
Operation Hiram was a major Israeli military offensive in late 1948 that rapidly captured the Upper Galilee from Arab forces during the closing stages of the 1948 Arab–Israeli War.
- 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: Operation Source Target entity description: Operation Source was a British World War II midget-submarine attack aimed at crippling the German battleship Tirpitz in a Norwegian fjord.
-
A.
Operation MI
Operation MI was the Imperial Japanese Navy’s World War II plan to seize Midway Atoll, culminating in the pivotal Battle of Midway in June 1942.
-
B.
Operation Mandrel
Operation Mandrel was a series of U.S. nuclear weapons tests conducted during the Cold War as part of the broader American nuclear testing program.
-
C.
Operation Banner
Operation Banner was the British Army’s long-running military deployment in Northern Ireland during the Troubles, focused on counterinsurgency and internal security operations.
-
D.
Operation Galvanic
Operation Galvanic was the U.S. amphibious offensive in November 1943 that launched the Gilbert Islands campaign in the central Pacific, including the bloody Battle of Tarawa, during World War II.
-
E.
Operation Hiram
Operation Hiram was a major Israeli military offensive in late 1948 that rapidly captured the Upper Galilee from Arab forces during the closing stages of the 1948 Arab–Israeli War.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
World War II operation
ⓘ
military operation ⓘ |
| belligerent |
Nazi Germany
ⓘ
United Kingdom ⓘ |
| casualties | high losses among X-craft crews ⓘ |
| codename | Operation Source ⓘ |
| conflict | World War II ⓘ |
| country | United Kingdom ⓘ |
| date | September 1943 ⓘ |
| effect |
demonstrated effectiveness of midget submarines
ⓘ
reduced threat of Tirpitz to Arctic convoys ⓘ |
| endDate | 1943-09-25 ⓘ |
| followedBy | subsequent RAF and Fleet Air Arm attacks on Tirpitz ⓘ |
| location |
Altafjord
ⓘ
linked to:
Altafjorden
Kåfjord ⓘ
linked to:
Kåfjorden
Norway ⓘ |
| notableAward | Victoria Crosses awarded to participating officers ⓘ |
| notableCommander |
Basil Place
ⓘ
Donald Cameron ⓘ Godfrey Place ⓘ Maxwell H. Q. Walker ⓘ |
| notableShipInvolved |
HMS Tirpitz (target)
ⓘ
linked to:
Tirpitz
|
| objective |
attack German heavy warships in Norwegian fjords
ⓘ
cripple the German battleship Tirpitz ⓘ |
| operator | Royal Navy ⓘ |
| opponentUnit |
German coastal defenses in Norway
ⓘ
Kriegsmarine ⓘ |
| participatingUnit |
X10
ⓘ
X5 ⓘ X6 ⓘ X7 ⓘ X8 ⓘ X9 ⓘ |
| partOf |
Atlantic naval campaign of World War II
ⓘ
linked to:
Battle of the Atlantic
|
| planningBy | Royal Navy Submarine Service ⓘ |
| result |
German naval forces in Norway weakened
ⓘ
Tirpitz heavily damaged ⓘ Tirpitz put out of action for months ⓘ
linked to:
attacks on German battleship Tirpitz
|
| startDate | 1943-09-20 ⓘ |
| target |
German battleship Scharnhorst
ⓘ
German battleship Tirpitz ⓘ
linked to:
Tirpitz
German heavy cruiser Lützow ⓘ
linked to:
German cruiser Lützow
|
| theatre |
European theatre of World War II
ⓘ
Norwegian Campaign (naval operations) ⓘ
linked to:
Norwegian Campaign convoy operations
|
| usedWeapon |
X-class midget submarine
ⓘ
X-craft ⓘ |
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: Operation Source Description of subject: Operation Source was a British World War II midget-submarine attack aimed at crippling the German battleship Tirpitz in a Norwegian fjord.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.