Dihedral Wall, El Capitan
E949529
Dihedral Wall on El Capitan is a classic, historically significant big-wall rock climbing route in Yosemite National Park, renowned for its sustained difficulty and association with pioneering climbers like Chuck Pratt.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Dihedral Wall, El Capitan canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11722196 — 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: Dihedral Wall, El Capitan Context triple: [Chuck Pratt, notableAscent, Dihedral Wall, El Capitan]
-
A.
Salathé Wall on El Capitan
Salathé Wall on El Capitan is a historic and demanding big-wall rock climbing route in Yosemite National Park, renowned for its sustained difficulty and classic status in traditional climbing.
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B.
North America Wall on El Capitan
North America Wall on El Capitan is a historic and highly challenging big-wall climbing route in Yosemite National Park, renowned as one of the early testpieces of modern aid climbing.
-
C.
Freerider (El Capitan)
Freerider (El Capitan) is a famous big-wall rock climbing route on Yosemite’s El Capitan, renowned as the line Tommy Caldwell and Alex Honnold each free climbed, with Honnold’s ropeless ascent featured in the film "Free Solo."
-
D.
the Nose (El Capitan climbing route)
The Nose is a legendary big-wall climbing route on El Capitan in Yosemite National Park, renowned as one of the most iconic and historically significant rock climbs in the world.
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E.
Moonlight Buttress
Moonlight Buttress is a renowned, steep sandstone big-wall free climb in Zion National Park, celebrated as one of the most iconic and demanding free routes in North America.
- 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: Dihedral Wall, El Capitan Target entity description: Dihedral Wall on El Capitan is a classic, historically significant big-wall rock climbing route in Yosemite National Park, renowned for its sustained difficulty and association with pioneering climbers like Chuck Pratt.
-
A.
Salathé Wall on El Capitan
Salathé Wall on El Capitan is a historic and demanding big-wall rock climbing route in Yosemite National Park, renowned for its sustained difficulty and classic status in traditional climbing.
-
B.
North America Wall on El Capitan
North America Wall on El Capitan is a historic and highly challenging big-wall climbing route in Yosemite National Park, renowned as one of the early testpieces of modern aid climbing.
-
C.
Freerider (El Capitan)
Freerider (El Capitan) is a famous big-wall rock climbing route on Yosemite’s El Capitan, renowned as the line Tommy Caldwell and Alex Honnold each free climbed, with Honnold’s ropeless ascent featured in the film "Free Solo."
-
D.
the Nose (El Capitan climbing route)
The Nose is a legendary big-wall climbing route on El Capitan in Yosemite National Park, renowned as one of the most iconic and historically significant rock climbs in the world.
-
E.
Moonlight Buttress
Moonlight Buttress is a renowned, steep sandstone big-wall free climb in Zion National Park, celebrated as one of the most iconic and demanding free routes in North America.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
big wall rock climbing route
ⓘ
traditional climbing route ⓘ |
| approachFrom | El Capitan Meadow ⓘ |
| bestSeason |
autumn
ⓘ
spring ⓘ |
| climbingArea | Yosemite Valley big walls ⓘ |
| commitmentGrade | Grade VI ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| difficultyAid | approximately A3 ⓘ |
| difficultyFree | very difficult and rarely freed ⓘ |
| ethic | traditional Yosemite clean climbing ethic ⓘ |
| famousFor |
being one of the earlier routes on the southeast face of El Capitan
ⓘ
sustained corner and dihedral systems ⓘ |
| firstAscentBy |
Chuck Pratt
ⓘ
Royal Robbins ⓘ Tom Frost ⓘ |
| firstAscentYear | 1962 ⓘ |
| hazard |
exposure
ⓘ
objective big wall risks ⓘ rockfall potential ⓘ |
| height |
approximately 3000 feet
ⓘ
approximately 900 meters ⓘ |
| historicalSignificance |
associated with pioneering Yosemite climbers
ⓘ
early big wall route on El Capitan ⓘ |
| knownFor |
classic status among Yosemite aid routes
ⓘ
sustained difficulty ⓘ technical dihedrals and corners ⓘ |
| locatedIn |
California
ⓘ
linked to:
California, United States
Mariposa County, California ⓘ
linked to:
Mariposa County
United States ⓘ
linked to:
United States of America
Yosemite National Park ⓘ Yosemite Valley ⓘ |
| locatedOn | El Capitan ⓘ |
| notableClimberAssociated |
Chuck Pratt
ⓘ
Royal Robbins ⓘ Tom Frost ⓘ |
| numberOfPitches | approximately 27 ⓘ |
| onRockFormation | El Capitan ⓘ |
| partOf | Yosemite big wall climbing history ⓘ |
| protection | traditional gear ⓘ |
| region | Sierra Nevada ⓘ |
| requires | portaledge for most parties ⓘ |
| requiresPermit | overnight bivouac permit on El Capitan (for most parties) ⓘ |
| rockType | granite ⓘ |
| routeType | multi-pitch ⓘ |
| style |
aid climbing
ⓘ
big wall climbing ⓘ |
| typicalAscentTime | several days ⓘ |
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: Dihedral Wall, El Capitan Description of subject: Dihedral Wall on El Capitan is a classic, historically significant big-wall rock climbing route in Yosemite National Park, renowned for its sustained difficulty and association with pioneering climbers like Chuck Pratt.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.