1871–1872 Colorado River expedition
E756618
The 1871–1872 Colorado River expedition was John Wesley Powell’s second major scientific and exploratory journey through the canyons of the Green and Colorado Rivers, aimed at mapping, studying geology, and documenting the region’s Indigenous cultures.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 1871–1872 Colorado River expedition canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8711098 — 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: 1871–1872 Colorado River expedition Context triple: [John Wesley Powell, expedition, 1871–1872 Colorado River expedition]
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A.
Exploration of the Colorado River of the West and Its Tributaries
Exploration of the Colorado River of the West and Its Tributaries is John Wesley Powell’s classic 19th-century account of his pioneering scientific and geographic survey of the Colorado River and the Grand Canyon region.
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B.
Washburn–Langford–Doane Expedition
The Washburn–Langford–Doane Expedition was an 1870 exploratory survey of the Yellowstone region whose reports helped lead to the creation of Yellowstone National Park.
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C.
Raynolds Expedition to the Yellowstone and Missouri River headwaters
The Raynolds Expedition to the Yellowstone and Missouri River headwaters was an 1859–1860 U.S. Army topographical survey that produced some of the earliest detailed scientific and geographic information about the northern Rocky Mountains and the Yellowstone region.
-
D.
Powder River Expedition
The Powder River Expedition was an 1865 U.S. Army campaign against Plains tribes in present-day Wyoming and Montana, aimed at securing overland travel routes and asserting federal control in the northern Great Plains.
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E.
McClure expedition
The McClure expedition was a mid-19th-century British Arctic voyage led by Robert McClure that is credited with the first traversal of the Northwest Passage, albeit partly by sledge over ice.
- 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: 1871–1872 Colorado River expedition Target entity description: The 1871–1872 Colorado River expedition was John Wesley Powell’s second major scientific and exploratory journey through the canyons of the Green and Colorado Rivers, aimed at mapping, studying geology, and documenting the region’s Indigenous cultures.
-
A.
Exploration of the Colorado River of the West and Its Tributaries
Exploration of the Colorado River of the West and Its Tributaries is John Wesley Powell’s classic 19th-century account of his pioneering scientific and geographic survey of the Colorado River and the Grand Canyon region.
-
B.
Washburn–Langford–Doane Expedition
The Washburn–Langford–Doane Expedition was an 1870 exploratory survey of the Yellowstone region whose reports helped lead to the creation of Yellowstone National Park.
-
C.
Raynolds Expedition to the Yellowstone and Missouri River headwaters
The Raynolds Expedition to the Yellowstone and Missouri River headwaters was an 1859–1860 U.S. Army topographical survey that produced some of the earliest detailed scientific and geographic information about the northern Rocky Mountains and the Yellowstone region.
-
D.
Powder River Expedition
The Powder River Expedition was an 1865 U.S. Army campaign against Plains tribes in present-day Wyoming and Montana, aimed at securing overland travel routes and asserting federal control in the northern Great Plains.
-
E.
McClure expedition
The McClure expedition was a mid-19th-century British Arctic voyage led by Robert McClure that is credited with the first traversal of the Northwest Passage, albeit partly by sledge over ice.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
exploratory expedition
ⓘ
river expedition ⓘ scientific expedition ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| endDate | 1872 ⓘ |
| explores |
Glen Canyon
NERFINISHED
ⓘ
Grand Canyon NERFINISHED ⓘ canyons of the Green River in Utah ⓘ |
| fieldOfWork |
cartography
ⓘ
ethnography ⓘ geography ⓘ geology ⓘ |
| follows | 1869 Colorado River expedition NERFINISHED ⓘ |
| hasLanguage | English ⓘ |
| hasParticipant |
Almon Harris Thompson
NERFINISHED
ⓘ
Ellen Powell Thompson NERFINISHED ⓘ John Wesley Powell NERFINISHED ⓘ photographer John K. Hillers NERFINISHED ⓘ topographer Frederick S. Dellenbaugh NERFINISHED ⓘ |
| hasPurpose |
ethnographic documentation of Indigenous cultures
ⓘ
geological study of river canyons ⓘ mapping the Green and Colorado Rivers ⓘ |
| leader | John Wesley Powell NERFINISHED ⓘ |
| location |
Colorado Plateau
NERFINISHED
ⓘ
Colorado River NERFINISHED ⓘ Green River NERFINISHED ⓘ |
| mainSubject |
Colorado River
NERFINISHED
ⓘ
Green River NERFINISHED ⓘ |
| notableFor |
detailed mapping of remote canyon regions
ⓘ
documentation of Indigenous cultures in the Colorado River basin ⓘ systematic scientific study of the Colorado River canyons ⓘ |
| organizer | U.S. Geological and Geographical Survey of the Territories NERFINISHED ⓘ |
| partOf | exploration of the Colorado River ⓘ |
| result |
ethnographic notes on Indigenous peoples of the region
ⓘ
geological reports on the Colorado Plateau ⓘ improved maps of the Green and Colorado Rivers ⓘ photographic documentation of the canyons ⓘ |
| sponsor | U.S. government NERFINISHED ⓘ |
| startDate | 1871 ⓘ |
| studies |
canyons of the Colorado River
ⓘ
canyons of the Green River ⓘ geology of the Colorado Plateau ⓘ |
| timePeriod | 19th century ⓘ |
| uses | wooden boats ⓘ |
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: 1871–1872 Colorado River expedition Description of subject: The 1871–1872 Colorado River expedition was John Wesley Powell’s second major scientific and exploratory journey through the canyons of the Green and Colorado Rivers, aimed at mapping, studying geology, and documenting the region’s Indigenous cultures.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.