Office of Naval Intelligence OP-20-G
E1252726
UNEXPLORED
The Office of Naval Intelligence OP-20-G was the U.S. Navy’s World War II-era signals intelligence and codebreaking unit, instrumental in intercepting and decrypting enemy communications in the Pacific and Atlantic theaters.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Magic (US codebreaking program against Japanese codes) | 1 |
| Office of Naval Intelligence OP-20-G canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T17130607 — 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: Office of Naval Intelligence OP-20-G Context triple: [Allied intelligence services, hasPart, Office of Naval Intelligence OP-20-G]
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A.
The Hut Six Story
The Hut Six Story is a memoir by Bletchley Park codebreaker Gordon Welchman recounting his crucial role in breaking German Enigma ciphers during World War II.
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B.
British Security Coordination
British Security Coordination was a covert British intelligence organization based in New York during World War II that coordinated espionage, propaganda, and security operations across the Western Hemisphere.
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C.
O.S.S.
O.S.S. is a 1946 American World War II spy film directed by Irving Pichel that dramatizes the covert operations of the Office of Strategic Services in Nazi-occupied Europe.
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D.
אגף המודיעין
אגף המודיעין הוא חיל המודיעין של צה"ל, האחראי על איסוף, ניתוח והערכה מודיעינית לצורך ביטחון מדינת ישראל.
-
E.
Room 40
Room 40 was the British Admiralty’s World War I codebreaking unit, famed for intercepting and decrypting German communications such as the Zimmermann Telegram.
- 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: Office of Naval Intelligence OP-20-G Target entity description: The Office of Naval Intelligence OP-20-G was the U.S. Navy’s World War II-era signals intelligence and codebreaking unit, instrumental in intercepting and decrypting enemy communications in the Pacific and Atlantic theaters.
-
A.
The Hut Six Story
The Hut Six Story is a memoir by Bletchley Park codebreaker Gordon Welchman recounting his crucial role in breaking German Enigma ciphers during World War II.
-
B.
British Security Coordination
British Security Coordination was a covert British intelligence organization based in New York during World War II that coordinated espionage, propaganda, and security operations across the Western Hemisphere.
-
C.
O.S.S.
O.S.S. is a 1946 American World War II spy film directed by Irving Pichel that dramatizes the covert operations of the Office of Strategic Services in Nazi-occupied Europe.
-
D.
אגף המודיעין
אגף המודיעין הוא חיל המודיעין של צה"ל, האחראי על איסוף, ניתוח והערכה מודיעינית לצורך ביטחון מדינת ישראל.
-
E.
Room 40
Room 40 was the British Admiralty’s World War I codebreaking unit, famed for intercepting and decrypting German communications such as the Zimmermann Telegram.
- F. None of above. chosen
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.