San Francisco Maru
E414250
The San Francisco Maru is a famous World War II Japanese cargo shipwreck in Chuuk Lagoon, renowned among advanced divers for its well-preserved tanks, trucks, and munitions lying at significant depth.
All labels observed (1)
| Label | Occurrences |
|---|---|
| San Francisco Maru canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4014384 — 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: San Francisco Maru Context triple: [Chuuk Lagoon, hasDiveSites, San Francisco Maru]
-
A.
Heian Maru
Heian Maru is a famous World War II Japanese transport shipwreck in Chuuk Lagoon, now a popular site for recreational wreck diving.
-
B.
Shinkoku Maru
Shinkoku Maru is a famous World War II-era Japanese oil tanker wreck that now serves as a popular scuba diving site in Chuuk Lagoon, Micronesia.
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C.
Fujikawa Maru
Fujikawa Maru is a famous World War II Japanese cargo shipwreck in Chuuk Lagoon, now serving as a popular wreck diving site rich with marine life and historical artifacts.
-
D.
Piper Maru Klotz
Piper Maru Klotz is the daughter of actress Gillian Anderson and art director Clyde Klotz, known primarily for her connection to her mother's work on The X-Files.
-
E.
Japanese submarine I-168
Japanese submarine I-168 was an Imperial Japanese Navy fleet submarine best known for its role in the Battle of Midway, where it torpedoed and sank the damaged aircraft carrier USS Yorktown and the destroyer USS Hammann.
- 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: San Francisco Maru Target entity description: The San Francisco Maru is a famous World War II Japanese cargo shipwreck in Chuuk Lagoon, renowned among advanced divers for its well-preserved tanks, trucks, and munitions lying at significant depth.
-
A.
Heian Maru
Heian Maru is a famous World War II Japanese transport shipwreck in Chuuk Lagoon, now a popular site for recreational wreck diving.
-
B.
Shinkoku Maru
Shinkoku Maru is a famous World War II-era Japanese oil tanker wreck that now serves as a popular scuba diving site in Chuuk Lagoon, Micronesia.
-
C.
Fujikawa Maru
Fujikawa Maru is a famous World War II Japanese cargo shipwreck in Chuuk Lagoon, now serving as a popular wreck diving site rich with marine life and historical artifacts.
-
D.
Piper Maru Klotz
Piper Maru Klotz is the daughter of actress Gillian Anderson and art director Clyde Klotz, known primarily for her connection to her mother's work on The X-Files.
-
E.
Japanese submarine I-168
Japanese submarine I-168 was an Imperial Japanese Navy fleet submarine best known for its role in the Battle of Midway, where it torpedoed and sank the damaged aircraft carrier USS Yorktown and the destroyer USS Hammann.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese cargo ship
ⓘ
World War II shipwreck ⓘ armed merchant vessel ⓘ |
| bowDepth | approximately 52 meters ⓘ |
| conflict | World War II ⓘ |
| countryOfOrigin | Japan ⓘ |
| diveSiteDifficulty | advanced ⓘ |
| diveType | deep wreck dive ⓘ |
| era | Pacific War ⓘ |
| hasCargo |
Type 95 Ha-Go light tanks
ⓘ
artillery shells ⓘ aviation fuel drums ⓘ general military supplies ⓘ mines ⓘ trucks ⓘ |
| hasFeature |
coral and marine growth on hull
ⓘ
holds filled with military cargo ⓘ intact superstructure sections ⓘ tanks on deck ⓘ |
| hazard |
decompression obligation
ⓘ
overhead environments inside wreck ⓘ potential unexploded ordnance ⓘ |
| heritageStatus | war grave ⓘ |
| knownFor |
deep recreational-technical dive site
ⓘ
well-preserved cargo of munitions ⓘ well-preserved cargo of tanks ⓘ well-preserved cargo of trucks ⓘ |
| locatedIn |
Chuuk Lagoon
ⓘ
Federated States of Micronesia ⓘ |
| operatedBy | Imperial Japanese Navy ⓘ |
| partOf |
Chuuk Lagoon underwater museum
ⓘ
Truk Lagoon wrecks ⓘ
surface form:
Truk Lagoon shipwrecks
|
| protectedBy | Chuuk State regulations ⓘ |
| shipType | maru-class cargo vessel ⓘ |
| sternDepth | approximately 64 meters ⓘ |
| sunkBy | United States forces ⓘ |
| sunkDuring | Operation Hailstone ⓘ |
| sunkIn | Chuuk Lagoon ⓘ |
| sunkMonth | February ⓘ |
| sunkNear | Truk Atoll NERFINISHED ⓘ |
| sunkYear | 1944 ⓘ |
| tourismType | wreck diving tourism ⓘ |
| visitedBy |
advanced recreational divers
ⓘ
technical divers ⓘ |
| wreckDepthMax | approximately 64 meters ⓘ |
| wreckDepthMin | approximately 45 meters ⓘ |
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: San Francisco Maru Description of subject: The San Francisco Maru is a famous World War II Japanese cargo shipwreck in Chuuk Lagoon, renowned among advanced divers for its well-preserved tanks, trucks, and munitions lying at significant depth.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.