Bloody Nose Ridge
E640486
Bloody Nose Ridge is the nickname for the Umurbrogol mountain ridge on Peleliu, a brutally contested World War II battlefield known for its fierce fighting and heavy casualties.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Bloody Nose Ridge canonical | 1 |
| Bloody Nose Ridge area (in broader usage related to Peleliu ridges) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7063512 — 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: Bloody Nose Ridge Context triple: [Umurbrogol mountain ridge, alsoKnownAs, Bloody Nose Ridge]
-
A.
Edson’s Ridge
Edson’s Ridge is a strategically important ridgeline on Guadalcanal in the Solomon Islands, best known as the site of a pivotal World War II battle between U.S. Marines and Japanese forces in 1942.
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B.
Sultana Ridge
Sultana Ridge is a long, committing alpine climbing route on Alaska’s Mount Foraker, known for its remote, exposed terrain and significant objective hazards.
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C.
Zurbriggen Ridge
Zurbriggen Ridge is a prominent alpine climbing route on New Zealand’s Aoraki / Mount Cook, known for its challenging mixed terrain and historical significance in mountaineering.
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D.
McPherson Ridge
McPherson Ridge is a prominent Civil War battlefield ridge west of Gettysburg, Pennsylvania, known as the site of significant early fighting on the first day of the Battle of Gettysburg.
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E.
Sweeney Ridge
Sweeney Ridge is a hilly, coastal open-space area on the San Francisco Peninsula known for its panoramic views of the Pacific Ocean and San Francisco Bay and its network of hiking trails.
- 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: Bloody Nose Ridge Target entity description: Bloody Nose Ridge is the nickname for the Umurbrogol mountain ridge on Peleliu, a brutally contested World War II battlefield known for its fierce fighting and heavy casualties.
-
A.
Edson’s Ridge
Edson’s Ridge is a strategically important ridgeline on Guadalcanal in the Solomon Islands, best known as the site of a pivotal World War II battle between U.S. Marines and Japanese forces in 1942.
-
B.
Sultana Ridge
Sultana Ridge is a long, committing alpine climbing route on Alaska’s Mount Foraker, known for its remote, exposed terrain and significant objective hazards.
-
C.
Zurbriggen Ridge
Zurbriggen Ridge is a prominent alpine climbing route on New Zealand’s Aoraki / Mount Cook, known for its challenging mixed terrain and historical significance in mountaineering.
-
D.
McPherson Ridge
McPherson Ridge is a prominent Civil War battlefield ridge west of Gettysburg, Pennsylvania, known as the site of significant early fighting on the first day of the Battle of Gettysburg.
-
E.
Sweeney Ridge
Sweeney Ridge is a hilly, coastal open-space area on the San Francisco Peninsula known for its panoramic views of the Pacific Ocean and San Francisco Bay and its network of hiking trails.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
World War II battlefield
ⓘ
mountain ridge ⓘ |
| associatedWith |
Palau war history
ⓘ
United States Marine Corps history ⓘ |
| attackedBy |
1st Marine Division (United States)
ⓘ
81st Infantry Division (United States) ⓘ
linked to:
81st Infantry Division
|
| casualtiesCharacterization |
very high American casualties
ⓘ
very high Japanese casualties ⓘ |
| conflict |
Battle of Peleliu
ⓘ
Pacific War ⓘ World War II ⓘ |
| country | Palau ⓘ |
| defendedBy | Japanese garrison on Peleliu ⓘ |
| geographicalContext | central Peleliu Island ⓘ |
| hasFeature |
caves
ⓘ
rocky outcrops ⓘ steep ridges ⓘ tunnels ⓘ |
| knownFor |
Japanese defensive positions
ⓘ
cave and bunker systems ⓘ fierce fighting ⓘ heavy casualties ⓘ rugged terrain ⓘ |
| locatedIn | Palau ⓘ |
| locatedOn | Peleliu ⓘ |
| memorializedAs | historic battlefield site ⓘ |
| militaryTactics |
Japanese defense-in-depth
ⓘ
U.S. frontal assaults ⓘ use of flamethrowers and explosives ⓘ |
| nameOrigin | nickname derived from heavy American losses ⓘ |
| nicknameFor | Umurbrogol ⓘ |
| notableFor |
controversy over necessity of the battle
ⓘ
prolonged resistance by Japanese forces ⓘ |
| partOf |
Peleliu battlefield
ⓘ
linked to:
Battle of Peleliu
Umurbrogol mountain ridge ⓘ Western Pacific theater of World War II ⓘ
linked to:
Pacific Theater of Operations
|
| partOfOperation |
U.S. invasion of Peleliu
ⓘ
linked to:
Palau Islands campaign
|
| presentDayStatus | part of World War II heritage sites in Palau ⓘ |
| strategicImportance |
commanded approaches to Japanese positions
ⓘ
dominated central Peleliu ⓘ |
| terrainType |
karst terrain
ⓘ
limestone ridge ⓘ |
| timePeriod |
October 1944
ⓘ
September 1944 ⓘ |
| usedBy |
Allied forces
ⓘ
Imperial Japanese Army ⓘ United States military ⓘ
linked to:
United States Armed Forces
|
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: Bloody Nose Ridge Description of subject: Bloody Nose Ridge is the nickname for the Umurbrogol mountain ridge on Peleliu, a brutally contested World War II battlefield known for its fierce fighting and heavy casualties.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
Umurbrogol Pocket
→
alsoKnownAs
→
Bloody Nose Ridge area (in broader usage related to Peleliu ridges)
ⓘ
linked to: Bloody Nose Ridge