Lewis and Clark River
E241740
The Lewis and Clark River is a small coastal river in northwestern Oregon that flows through forested terrain into the Youngs River near Astoria, historically associated with the Lewis and Clark Expedition.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Lewis and Clark River canonical | 2 |
| Lewis and Clark River watershed | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T882911 — 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 and Clark River Context triple: [Clatsop County, Oregon, containsWaterBody, Lewis and Clark River]
-
A.
Snake River
The Snake River is a major waterway in the northwestern United States that flows through Wyoming, Idaho, Oregon, and Washington before joining the Columbia River.
-
B.
Columbia River
The Columbia River is a major river of the Pacific Northwest that forms much of the border between Oregon and Washington and is vital for hydroelectric power, transportation, and regional ecosystems.
-
C.
Lewis River
The Lewis River is a tributary of the Columbia River in southwestern Washington State, known for its hydroelectric dams, scenic gorges, and popular fishing and recreation areas.
-
D.
Klamath River
The Klamath River is a major river in southern Oregon and northern California known for its salmon runs, ecological significance, and ongoing water and dam-removal controversies.
-
E.
Green River
Green River is a river in western Washington State that flows through the Seattle metropolitan area and is a key tributary of the Duwamish River.
- 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 and Clark River Target entity description: The Lewis and Clark River is a small coastal river in northwestern Oregon that flows through forested terrain into the Youngs River near Astoria, historically associated with the Lewis and Clark Expedition.
-
A.
Snake River
The Snake River is a major waterway in the northwestern United States that flows through Wyoming, Idaho, Oregon, and Washington before joining the Columbia River.
-
B.
Columbia River
The Columbia River is a major river of the Pacific Northwest that forms much of the border between Oregon and Washington and is vital for hydroelectric power, transportation, and regional ecosystems.
-
C.
Lewis River
The Lewis River is a tributary of the Columbia River in southwestern Washington State, known for its hydroelectric dams, scenic gorges, and popular fishing and recreation areas.
-
D.
Klamath River
The Klamath River is a major river in southern Oregon and northern California known for its salmon runs, ecological significance, and ongoing water and dam-removal controversies.
-
E.
Green River
Green River is a river in western Washington State that flows through the Seattle metropolitan area and is a key tributary of the Duwamish River.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
coastal river
ⓘ
river ⓘ |
| continent | North America ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| flowsInto | Youngs River ⓘ |
| flowsNear | Astoria, Oregon ⓘ |
| flowsThrough | forests ⓘ |
| hasHistoricalSignificance | site of activities related to Lewis and Clark winter encampment area ⓘ |
| hasMouth | confluence with Youngs River ⓘ |
| hasMouthElevation | approximately 0 meters ⓘ |
| hasNearbyProtectedArea | Lewis and Clark National Historical Park ⓘ |
| historicallyAssociatedWith | Lewis and Clark Expedition ⓘ |
| locatedIn |
Clatsop County, Oregon
ⓘ
Oregon ⓘ northwestern Oregon ⓘ |
| locatedInRegion | Pacific Northwest ⓘ |
| mouthLocatedIn | Youngs River ⓘ |
| mouthLocatedNear | Astoria, Oregon ⓘ |
| namedAfter | Lewis and Clark Expedition ⓘ |
| near | Fort Clatsop ⓘ |
| partOf |
Columbia River Basin
ⓘ
surface form:
Columbia River drainage basin
Youngs River watershed ⓘ |
| state | Oregon ⓘ |
| terrain | forested terrain ⓘ |
| tributaryOf | Youngs River ⓘ |
| usedFor |
boating
ⓘ
fishing ⓘ recreation ⓘ |
| watercourseType | small river ⓘ |
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 and Clark River Description of subject: The Lewis and Clark River is a small coastal river in northwestern Oregon that flows through forested terrain into the Youngs River near Astoria, historically associated with the Lewis and Clark Expedition.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Lewis and Clark River watershed