Lewis Glacier
E472013
Lewis Glacier is a small mountain glacier located on the slopes of South Sister in the Cascade Range of Oregon.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Lewis Glacier canonical | 5 |
| upper Lewis Glacier basin | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3407657 — 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: Lewis Glacier Context triple: [South Sister, hasGlacier, Lewis Glacier]
-
A.
Lewis Glacier
Lewis Glacier is the largest remaining glacier on Mount Kenya, located near the mountain’s summit in Kenya’s central highlands.
-
B.
Lyman Glacier
Lyman Glacier is a mountain glacier located on the slopes of Mount Adams in Washington State, known for its retreat in recent decades due to climate change.
-
C.
Walton Glacier
Walton Glacier is a mountain glacier associated with Oregon’s Mount Jefferson in the Cascade Range.
-
D.
Russell Glacier
Russell Glacier is a mountain glacier located on the slopes of Mount Jefferson in the Cascade Range of Oregon.
-
E.
Ladd Glacier
Ladd Glacier is a mountain glacier located on the slopes of Mount Hood in the Cascade Range of northern Oregon.
- 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: Lewis Glacier Target entity description: Lewis Glacier is a small mountain glacier located on the slopes of South Sister in the Cascade Range of Oregon.
-
A.
Lewis Glacier
Lewis Glacier is the largest remaining glacier on Mount Kenya, located near the mountain’s summit in Kenya’s central highlands.
-
B.
Lyman Glacier
Lyman Glacier is a mountain glacier located on the slopes of Mount Adams in Washington State, known for its retreat in recent decades due to climate change.
-
C.
Walton Glacier
Walton Glacier is a mountain glacier associated with Oregon’s Mount Jefferson in the Cascade Range.
-
D.
Russell Glacier
Russell Glacier is a mountain glacier located on the slopes of Mount Jefferson in the Cascade Range of Oregon.
-
E.
Ladd Glacier
Ladd Glacier is a mountain glacier located on the slopes of Mount Hood in the Cascade Range of northern Oregon.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
glacier
ⓘ
mountain glacier ⓘ |
| drainsTo | headwaters of local streams on South Sister ⓘ |
| hasApproximateElevation | about 2,700–2,900 meters above sea level ⓘ |
| hasAreaTrend | decreasing area ⓘ |
| hasClimate | alpine climate ⓘ |
| hasCoordinateSystem | latitude/longitude in central Oregon Cascades ⓘ |
| hasGeologicalSetting | volcanic edifice of South Sister ⓘ |
| hasMeltSeason | late spring to summer melt season ⓘ |
| hasNameOrigin | named after a person with surname Lewis (exact origin uncertain) ⓘ |
| hasPrimaryAblationProcess |
melting
ⓘ
sublimation ⓘ |
| hasPrimaryAccumulationSource | snowfall ⓘ |
| hasRegion | Pacific Northwest ⓘ |
| hasSnowSeason | winter and spring accumulation season ⓘ |
| hasStatus |
retreating glacier
ⓘ
shrinking glacier ⓘ |
| hasSurfaceFeature |
crevasses (seasonally and depending on conditions)
ⓘ
exposed ice ⓘ snowfields ⓘ |
| hasThicknessTrend | decreasing thickness ⓘ |
| isAccessibleFrom | trail network on South Sister ⓘ |
| isExampleOf | small Cascade Range glacier ⓘ |
| isMonitoredFor |
climate change impacts
ⓘ
glacial retreat ⓘ |
| isNear | summit area of South Sister ⓘ |
| isSmallRelativeTo | other Cascade Range glaciers ⓘ |
| isSouthOf | North Sister ⓘ |
| isSubjectOf | glaciological studies in the Oregon Cascades ⓘ |
| isWestOf | Bend, Oregon ⓘ |
| isWithinProtectedArea |
Deschutes National Forest
ⓘ
Three Sisters Wilderness ⓘ |
| locatedInCountry |
United States
ⓘ
linked to:
United States of America
|
| locatedInCounty |
Deschutes County, Oregon
ⓘ
linked to:
Deschutes County, Oregon, United States
|
| locatedInMountainRange | Cascade Range ⓘ |
| locatedInState | Oregon ⓘ |
| locatedOn | South Sister ⓘ |
| mountainTypeOfHost | stratovolcano ⓘ |
| onFlankOf | South Sister ⓘ |
| partOf |
Cascade Range volcanoes
ⓘ
linked to:
Cascade Volcanoes
|
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: Lewis Glacier Description of subject: Lewis Glacier is a small mountain glacier located on the slopes of South Sister in the Cascade Range of Oregon.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Lewis Glacier