Mount Thielsen
E788401
Mount Thielsen is a sharply eroded, spire-like extinct volcano in the Oregon Cascades, noted for its dramatic peak and popular climbing routes.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mount Thielsen canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7536211 — 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: Mount Thielsen Context triple: [Volcanoes of Oregon, hasNotableMember, Mount Thielsen]
-
A.
Mount Si
Mount Si is a prominent mountain in Washington State’s Cascade Range, popular for its hiking trails and scenic views overlooking the Snoqualmie Valley.
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B.
Mount Garfield
Mount Garfield is a prominent 4,500-foot peak in New Hampshire’s White Mountains, known for its expansive summit views and location along the Appalachian Trail.
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C.
Mount Griggs
Mount Griggs is a prominent stratovolcano in Alaska’s Aleutian volcanic arc, rising above the Valley of Ten Thousand Smokes within Katmai National Park and Preserve.
-
D.
Mount Frissell
Mount Frissell is a peak in the Taconic Mountains best known for having a shoulder that marks the highest elevation point in the state of Connecticut.
-
E.
Mount Wilis
Mount Wilis is a solitary, inactive stratovolcano in East Java, Indonesia, known for its forested slopes and surrounding rural highland communities.
- 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: Mount Thielsen Target entity description: Mount Thielsen is a sharply eroded, spire-like extinct volcano in the Oregon Cascades, noted for its dramatic peak and popular climbing routes.
-
A.
Mount Si
Mount Si is a prominent mountain in Washington State’s Cascade Range, popular for its hiking trails and scenic views overlooking the Snoqualmie Valley.
-
B.
Mount Garfield
Mount Garfield is a prominent 4,500-foot peak in New Hampshire’s White Mountains, known for its expansive summit views and location along the Appalachian Trail.
-
C.
Mount Griggs
Mount Griggs is a prominent stratovolcano in Alaska’s Aleutian volcanic arc, rising above the Valley of Ten Thousand Smokes within Katmai National Park and Preserve.
-
D.
Mount Frissell
Mount Frissell is a peak in the Taconic Mountains best known for having a shoulder that marks the highest elevation point in the state of Connecticut.
-
E.
Mount Wilis
Mount Wilis is a solitary, inactive stratovolcano in East Java, Indonesia, known for its forested slopes and surrounding rural highland communities.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
extinct volcano
ⓘ
mountain ⓘ peak in the Cascade Range ⓘ stratovolcano ⓘ |
| age | Pleistocene ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| easiestRoute | scramble and short technical rock climb ⓘ |
| elevation |
2799 m
ⓘ
9182 ft ⓘ |
| geologicalProcess |
glacial erosion
ⓘ
volcanic construction ⓘ |
| hasClimbingRoute |
East Side routes
ⓘ
Northwest Ridge route NERFINISHED ⓘ West Ridge route NERFINISHED ⓘ |
| hasWildernessArea | Mount Thielsen Wilderness NERFINISHED ⓘ |
| isPopularFor |
backcountry skiing
ⓘ
climbing ⓘ hiking ⓘ |
| knownFor |
alpine scrambling
ⓘ
dramatic peak profile ⓘ mountaineering ⓘ technical climbing routes ⓘ |
| lastEruption | Pleistocene epoch NERFINISHED ⓘ |
| locatedIn |
Cascade Range
ⓘ
Douglas County, Oregon NERFINISHED ⓘ Klamath County, Oregon NERFINISHED ⓘ Oregon ⓘ Southern Oregon Cascades NERFINISHED ⓘ |
| locatedInProtectedArea |
Mount Thielsen Wilderness
NERFINISHED
ⓘ
Umpqua National Forest NERFINISHED ⓘ Winema National Forest NERFINISHED ⓘ |
| mapLabel | Mount Thielsen NERFINISHED ⓘ |
| mountainRange | Cascade Range ⓘ |
| nearestLargeLake | Diamond Lake NERFINISHED ⓘ |
| nearestNationalPark | Crater Lake National Park NERFINISHED ⓘ |
| nickname | Lightning Rod of the Cascades NERFINISHED ⓘ |
| notableFeature |
heavily glaciated and eroded flanks
ⓘ
prominent horn-like peak ⓘ sharp spire-like summit ⓘ |
| parentPeak | Mount Bailey NERFINISHED ⓘ |
| prominence |
1300 m
ⓘ
4265 ft ⓘ |
| region | Pacific Northwest ⓘ |
| rockType |
andesite
ⓘ
basaltic andesite ⓘ |
| status | extinct ⓘ |
| topographicIsolation | approximately 24 km ⓘ |
| volcanicArc | Cascade Volcanic Arc NERFINISHED ⓘ |
| volcanicBelt | Cascade Range NERFINISHED ⓘ |
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: Mount Thielsen Description of subject: Mount Thielsen is a sharply eroded, spire-like extinct volcano in the Oregon Cascades, noted for its dramatic peak and popular climbing routes.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.