Black Pyramid
E271103
The Black Pyramid is a prominent, steep rock-and-ice section on K2’s Abruzzi Spur route that poses one of the climb’s most technically challenging and dangerous obstacles.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Black Pyramid canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2485067 — 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: Black Pyramid Context triple: [Abruzzi Spur, hasKeySection, Black Pyramid]
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A.
Black Pyramid
The Black Pyramid is an ancient Egyptian pyramid at Dahshur, notable for its dark mudbrick core and association with the Middle Kingdom pharaoh Amenemhat III.
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B.
Pyramiden
Pyramiden is an abandoned Soviet-era mining town on the Norwegian archipelago of Svalbard, now preserved as a ghost town and tourist destination in the Arctic.
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C.
The Pyramid
The Pyramid is the popular nickname for the Transamerica Pyramid, a distinctive, pyramid-shaped skyscraper and iconic feature of the San Francisco skyline.
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D.
The Pyramid
The Pyramid is a massive pyramid-shaped arena and entertainment complex in Memphis, Tennessee, known for its distinctive architecture and current use as a Bass Pro Shops megastore and tourist attraction.
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E.
Pyramid of the Magician
The Pyramid of the Magician is a distinctive, steep-sided Maya pyramid at the ancient city of Uxmal in Mexico, noted for its unusual oval base and layered construction phases.
- 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: Black Pyramid Target entity description: The Black Pyramid is a prominent, steep rock-and-ice section on K2’s Abruzzi Spur route that poses one of the climb’s most technically challenging and dangerous obstacles.
-
A.
Black Pyramid
The Black Pyramid is an ancient Egyptian pyramid at Dahshur, notable for its dark mudbrick core and association with the Middle Kingdom pharaoh Amenemhat III.
-
B.
Pyramiden
Pyramiden is an abandoned Soviet-era mining town on the Norwegian archipelago of Svalbard, now preserved as a ghost town and tourist destination in the Arctic.
-
C.
The Pyramid
The Pyramid is the popular nickname for the Transamerica Pyramid, a distinctive, pyramid-shaped skyscraper and iconic feature of the San Francisco skyline.
-
D.
The Pyramid
The Pyramid is a massive pyramid-shaped arena and entertainment complex in Memphis, Tennessee, known for its distinctive architecture and current use as a Bass Pro Shops megastore and tourist attraction.
-
E.
Pyramid of the Magician
The Pyramid of the Magician is a distinctive, steep-sided Maya pyramid at the ancient city of Uxmal in Mexico, noted for its unusual oval base and layered construction phases.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
mountain feature
ⓘ
rock-and-ice formation ⓘ |
| aboveFeature | House Chimney ⓘ |
| associatedWith | high fatality rate on K2 ⓘ |
| belowFeature | Shoulder of K2 ⓘ |
| climbingGradeRelative | one of the most technically difficult sections on K2 ⓘ |
| climbingStyleRequired |
mixed climbing
ⓘ
rock climbing in mountaineering boots and crampons ⓘ |
| composition |
ice
ⓘ
rock ⓘ |
| elevationApproximate | around 7,200–7,600 metres above sea level ⓘ |
| featureType | mixed rock-and-ice buttress ⓘ |
| firstAscendedAsPartOf | first ascent of K2 via Abruzzi Spur in 1954 ⓘ |
| hazard |
exposure to severe weather
ⓘ
high objective danger ⓘ icefall ⓘ rockfall ⓘ |
| locatedInCountry | Pakistan ⓘ |
| locatedInMountainRange | Karakoram ⓘ |
| locatedInRegion | Gilgit-Baltistan ⓘ |
| locatedOn | K2 ⓘ |
| locatedOnRoute | Abruzzi Spur ⓘ |
| logisticalIssue | bottlenecks can form when many climbers are on route ⓘ |
| nameOrigin | named for its dark, pyramid-like appearance ⓘ |
| notableFor |
high consequence falls
ⓘ
poor and variable protection ⓘ sustained technical climbing ⓘ |
| objectiveDifficulty | increased by altitude and thin air ⓘ |
| partOf |
Abruzzi Spur route on K2
ⓘ
standard southeast ridge route on K2 ⓘ |
| reputationAmongClimbers | one of the most feared sections on K2 ⓘ |
| requires |
advanced high-altitude technical climbing skills
ⓘ
use of fixed ropes by most commercial and large expeditions ⓘ |
| riskFactor |
fatigue due to altitude and sustained difficulty
ⓘ
limited options for safe bivouacs ⓘ |
| routeFunction | key crux section of Abruzzi Spur ⓘ |
| safetyPractice |
careful rope management required
ⓘ
helmets strongly recommended due to rockfall ⓘ |
| seasonalCondition | conditions vary greatly by season and year ⓘ |
| slopeCharacteristic | steep ⓘ |
| temperatureCondition | extreme cold common ⓘ |
| terrainCharacteristic |
broken rock bands
ⓘ
small snow and ice fields between rock sections ⓘ |
| timeToClimbRelative | often takes many hours to negotiate ⓘ |
| usedBy | most expeditions attempting K2 via Abruzzi Spur ⓘ |
| visibility | visually prominent from Abruzzi Spur route ⓘ |
| weatherImpact | strongly affected by wind and spindrift ⓘ |
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: Black Pyramid Description of subject: The Black Pyramid is a prominent, steep rock-and-ice section on K2’s Abruzzi Spur route that poses one of the climb’s most technically challenging and dangerous obstacles.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.