Fort Mandan
E853361
Fort Mandan was the winter encampment of the Lewis and Clark Expedition in present-day North Dakota, where the Corps of Discovery prepared for and launched the next phase of their journey west.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Fort Mandan canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10238796 — 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: Fort Mandan Context triple: [John Baptiste Charbonneau, birthPlace, Fort Mandan]
-
A.
Fort Snelling
Fort Snelling is a historic 19th-century U.S. Army fort located at the confluence of the Mississippi and Minnesota Rivers in present-day Minnesota, significant for its roles in regional military history, westward expansion, and Native American relations.
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B.
Fort Good Hope
Fort Good Hope is a small, predominantly Indigenous community in the Northwest Territories of Canada, located above the Arctic Circle along the Mackenzie River.
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C.
Fort Assinniboine
Fort Assinniboine is a historic 19th-century U.S. Army fort near Havre, Montana, that once served as a major military post on the northern plains.
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D.
Fort St. Anthony
Fort St. Anthony was a European-built coastal stronghold on the former Gold Coast (in present-day Ghana) that played a role in West African trade and colonial expansion.
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E.
Fort Osage
Fort Osage is a historic early 19th-century U.S. Army outpost and trading post on the Missouri River, significant for its role in frontier defense and commerce during westward expansion.
- 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: Fort Mandan Target entity description: Fort Mandan was the winter encampment of the Lewis and Clark Expedition in present-day North Dakota, where the Corps of Discovery prepared for and launched the next phase of their journey west.
-
A.
Fort Snelling
Fort Snelling is a historic 19th-century U.S. Army fort located at the confluence of the Mississippi and Minnesota Rivers in present-day Minnesota, significant for its roles in regional military history, westward expansion, and Native American relations.
-
B.
Fort Good Hope
Fort Good Hope is a small, predominantly Indigenous community in the Northwest Territories of Canada, located above the Arctic Circle along the Mackenzie River.
-
C.
Fort Assinniboine
Fort Assinniboine is a historic 19th-century U.S. Army fort near Havre, Montana, that once served as a major military post on the northern plains.
-
D.
Fort St. Anthony
Fort St. Anthony was a European-built coastal stronghold on the former Gold Coast (in present-day Ghana) that played a role in West African trade and colonial expansion.
-
E.
Fort Osage
Fort Osage is a historic early 19th-century U.S. Army outpost and trading post on the Missouri River, significant for its role in frontier defense and commerce during westward expansion.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Lewis and Clark Expedition site
ⓘ
historic site ⓘ military fortification ⓘ |
| associatedWith |
Hidatsa people
NERFINISHED
ⓘ
Mandan people NERFINISHED ⓘ Sacagawea NERFINISHED ⓘ Toussaint Charbonneau NERFINISHED ⓘ |
| builtInPeriod | winter 1804–1805 ⓘ |
| commandedBy |
Meriwether Lewis
NERFINISHED
ⓘ
William Clark NERFINISHED ⓘ |
| constructedBy |
Corps of Discovery
NERFINISHED
ⓘ
Lewis and Clark Expedition NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| endDate | 1805-04 ⓘ |
| event | birth of Jean Baptiste Charbonneau ⓘ |
| function |
diplomatic base for Native American relations
ⓘ
scientific observation post ⓘ supply depot ⓘ |
| hasFeature |
blockhouses
ⓘ
interior cabins ⓘ palisade walls ⓘ |
| hasNearbyAttraction | North Dakota Lewis & Clark Interpretive Center NERFINISHED ⓘ |
| hasReplica | Fort Mandan reconstructed site NERFINISHED ⓘ |
| heritageDesignation | National Historic Landmark (associated site) NERFINISHED ⓘ |
| locatedIn |
McLean County, North Dakota
NERFINISHED
ⓘ
North Dakota NERFINISHED ⓘ Upper Missouri River region NERFINISHED ⓘ |
| locatedNear |
Knife River
NERFINISHED
ⓘ
Missouri River NERFINISHED ⓘ Washburn, North Dakota NERFINISHED ⓘ |
| material | cottonwood logs ⓘ |
| namedAfter | George Mandan (disputed etymology) NERFINISHED ⓘ |
| openToPublic | true ⓘ |
| operator | Lewis and Clark Fort Mandan Foundation NERFINISHED ⓘ |
| partOf | Lewis and Clark National Historic Trail NERFINISHED ⓘ |
| purpose |
staging point for westward exploration
ⓘ
winter quarters for the Lewis and Clark Expedition ⓘ |
| shape | triangular fort layout ⓘ |
| significantFor |
diplomatic meetings with Native American tribes
ⓘ
mapping and scientific data collection ⓘ preparation for crossing the Rocky Mountains ⓘ |
| startDate | 1804-11 ⓘ |
| status | original site destroyed ⓘ |
| timeZone | Central Time Zone ⓘ |
| usedAs | winter encampment ⓘ |
| usedBy |
Corps of Discovery
NERFINISHED
ⓘ
Lewis and Clark Expedition 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: Fort Mandan Description of subject: Fort Mandan was the winter encampment of the Lewis and Clark Expedition in present-day North Dakota, where the Corps of Discovery prepared for and launched the next phase of their journey west.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.