40 O.B.
E591495
40 O.B. is an alternative name for Room 40, the British Admiralty’s World War I codebreaking and signals intelligence unit.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 40 O.B. canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6387832 — 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: 40 O.B. Context triple: [Room 40, alsoKnownAs, 40 O.B.]
-
A.
OBBI
OBBI is the ICAO airport code for Bahrain International Airport, the main international gateway to the Kingdom of Bahrain.
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B.
OBR
OBR is the standard rulebook that governs the official rules and regulations of professional baseball, particularly Major League Baseball.
-
C.
OBR
OBR is the independent UK fiscal watchdog that provides official economic and public finance forecasts and assesses the sustainability of government finances.
-
D.
Obbattu
Obbattu is a traditional South Indian sweet flatbread, typically stuffed with a jaggery-lentil or coconut filling and prepared during festivals and special occasions.
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E.
Obetia
Obetia is a small genus of flowering plants in the nettle family Cannabaceae, known for its stinging hairs and occurrence in parts of Africa and nearby regions.
- 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: 40 O.B. Target entity description: 40 O.B. is an alternative name for Room 40, the British Admiralty’s World War I codebreaking and signals intelligence unit.
-
A.
OBBI
OBBI is the ICAO airport code for Bahrain International Airport, the main international gateway to the Kingdom of Bahrain.
-
B.
OBR
OBR is the standard rulebook that governs the official rules and regulations of professional baseball, particularly Major League Baseball.
-
C.
OBR
OBR is the independent UK fiscal watchdog that provides official economic and public finance forecasts and assesses the sustainability of government finances.
-
D.
Obbattu
Obbattu is a traditional South Indian sweet flatbread, typically stuffed with a jaggery-lentil or coconut filling and prepared during festivals and special occasions.
-
E.
Obetia
Obetia is a small genus of flowering plants in the nettle family Cannabaceae, known for its stinging hairs and occurrence in parts of Africa and nearby regions.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
codebreaking organization
ⓘ
military intelligence unit ⓘ signals intelligence unit ⓘ |
| activePeriod | 1914–1919 ⓘ |
| alternativeName | Room 40 ⓘ |
| classification | secret ⓘ |
| conflict | World War I ⓘ |
| contributedTo |
Allied naval superiority in World War I
ⓘ
British foreign policy decisions during World War I ⓘ |
| country | United Kingdom ⓘ |
| dissolvedIn | 1919 ⓘ |
| employer |
Alfred Ewing
ⓘ
Dilly Knox ⓘ Nigel de Grey ⓘ Reginald Hall ⓘ
linked to:
William Reginald Hall
William Montgomery ⓘ |
| era | early 20th century ⓘ |
| establishedIn | 1914 ⓘ |
| field |
communications intelligence
ⓘ
cryptanalysis ⓘ signals intelligence ⓘ |
| focus |
German diplomatic communications
ⓘ
German naval codes ⓘ |
| location |
Admiralty building, London
ⓘ
linked to:
Old Admiralty Building
|
| notableFor |
decryption of the Zimmermann Telegram
ⓘ
influencing British naval operations in World War I ⓘ interception and decryption of German naval communications ⓘ |
| operatedBy |
British Admiralty
ⓘ
linked to:
Admiralty (United Kingdom)
|
| operationalDomain |
diplomatic intelligence
ⓘ
naval warfare ⓘ |
| partOf |
British naval intelligence
ⓘ
linked to:
British Naval Intelligence Division
|
| relatedTo |
British intelligence community
ⓘ
linked to:
British intelligence
Royal Navy ⓘ |
| subsequentInfluenceOn |
Bletchley Park
ⓘ
Government Code and Cypher School ⓘ |
| usedLanguage |
German
ⓘ
Naval code systems ⓘ |
| usedMethod |
codebook reconstruction
ⓘ
manual cryptanalysis ⓘ traffic analysis ⓘ |
| usedSource |
cable communications
ⓘ
intercepted radio messages ⓘ |
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: 40 O.B. Description of subject: 40 O.B. is an alternative name for Room 40, the British Admiralty’s World War I codebreaking and signals intelligence unit.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.