Fort Berthold Indian Reservation
E824657
Fort Berthold Indian Reservation is a Native American reservation in North Dakota that is home to the Mandan, Hidatsa, and Arikara Nation (Three Affiliated Tribes).
All labels observed (2)
| Label | Occurrences |
|---|---|
| Fort Berthold Indian Reservation canonical | 3 |
| Three Affiliated Tribes of the Fort Berthold Reservation | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9806593 — 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 Berthold Indian Reservation Context triple: [North Dakota’s at-large congressional district, containsReservation, Fort Berthold Indian Reservation]
-
A.
Flandreau Indian Reservation
Flandreau Indian Reservation is a federally recognized Native American reservation in South Dakota that serves as the homeland of the Flandreau Santee Sioux Tribe.
-
B.
Yankton Indian Reservation
The Yankton Indian Reservation is a federally recognized Native American reservation in southeastern South Dakota that serves as the homeland of the Yankton Sioux Tribe.
-
C.
Omaha Reservation
The Omaha Reservation is a Native American reservation in northeastern Nebraska that serves as the homeland and administrative center of the Omaha people.
-
D.
Cheyenne River Indian Reservation
The Cheyenne River Indian Reservation is a large Native American reservation in central South Dakota that is home primarily to the Cheyenne River Sioux Tribe, a Lakota nation.
-
E.
Wind River Indian Reservation
The Wind River Indian Reservation is a large Native American reservation in central Wyoming that is home to the Eastern Shoshone and Northern Arapaho tribes.
- 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 Berthold Indian Reservation Target entity description: Fort Berthold Indian Reservation is a Native American reservation in North Dakota that is home to the Mandan, Hidatsa, and Arikara Nation (Three Affiliated Tribes).
-
A.
Flandreau Indian Reservation
Flandreau Indian Reservation is a federally recognized Native American reservation in South Dakota that serves as the homeland of the Flandreau Santee Sioux Tribe.
-
B.
Yankton Indian Reservation
The Yankton Indian Reservation is a federally recognized Native American reservation in southeastern South Dakota that serves as the homeland of the Yankton Sioux Tribe.
-
C.
Omaha Reservation
The Omaha Reservation is a Native American reservation in northeastern Nebraska that serves as the homeland and administrative center of the Omaha people.
-
D.
Cheyenne River Indian Reservation
The Cheyenne River Indian Reservation is a large Native American reservation in central South Dakota that is home primarily to the Cheyenne River Sioux Tribe, a Lakota nation.
-
E.
Wind River Indian Reservation
The Wind River Indian Reservation is a large Native American reservation in central Wyoming that is home to the Eastern Shoshone and Northern Arapaho tribes.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Native American reservation
ⓘ
human settlement ⓘ |
| affectedBy | construction of Garrison Dam ⓘ |
| alsoKnownAs | Fort Berthold Reservation NERFINISHED ⓘ |
| capital | New Town, North Dakota NERFINISHED ⓘ |
| containsSettlement |
Mandaree, North Dakota
NERFINISHED
ⓘ
New Town, North Dakota NERFINISHED ⓘ Parshall, North Dakota NERFINISHED ⓘ Twin Buttes, North Dakota NERFINISHED ⓘ White Shield, North Dakota NERFINISHED ⓘ |
| country | United States of America ⓘ |
| ethnicGroup |
Arikara
NERFINISHED
ⓘ
Hidatsa NERFINISHED ⓘ Mandan NERFINISHED ⓘ |
| governingBody | Tribal Business Council of the Three Affiliated Tribes NERFINISHED ⓘ |
| hasCulturalInstitution | tribal cultural and heritage centers ⓘ |
| hasEconomicActivity |
agriculture
ⓘ
oil production ⓘ ranching ⓘ tribal enterprises ⓘ |
| hasEducationalInstitution | tribal schools ⓘ |
| hasHealthcareFacility | Indian Health Service clinics ⓘ |
| hasJurisdiction | Mandan, Hidatsa, and Arikara Nation tribal courts NERFINISHED ⓘ |
| hasLawEnforcement | Three Affiliated Tribes Police Department NERFINISHED ⓘ |
| hasOfficialLanguage | English ⓘ |
| hasTraditionalLanguage |
Arikara language
NERFINISHED
ⓘ
Hidatsa language NERFINISHED ⓘ Mandan language NERFINISHED ⓘ |
| homeOf |
Mandan, Hidatsa, and Arikara Nation
NERFINISHED
ⓘ
Three Affiliated Tribes NERFINISHED ⓘ |
| locatedIn |
North Dakota
NERFINISHED
ⓘ
United States of America ⓘ
surface form:
United States
|
| locatedInAdministrativeEntity |
Dunn County, North Dakota
NERFINISHED
ⓘ
McKenzie County, North Dakota NERFINISHED ⓘ McLean County, North Dakota NERFINISHED ⓘ Mountrail County, North Dakota NERFINISHED ⓘ Ward County, North Dakota NERFINISHED ⓘ |
| locatedOn |
Lake Sakakawea
NERFINISHED
ⓘ
Missouri River NERFINISHED ⓘ |
| partOf | Great Plains ⓘ |
| recognizedBy |
United States government
ⓘ
surface form:
United States federal government
|
| subjectOf | treaties between the Three Affiliated Tribes and the United States ⓘ |
| timeZone | Central Time Zone ⓘ |
| tribalEnrollment | members of the Three Affiliated Tribes ⓘ |
| tribalGovernment |
Mandan, Hidatsa, and Arikara Nation
NERFINISHED
ⓘ
Three Affiliated Tribes 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 Berthold Indian Reservation Description of subject: Fort Berthold Indian Reservation is a Native American reservation in North Dakota that is home to the Mandan, Hidatsa, and Arikara Nation (Three Affiliated Tribes).
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
North Dakota’s at-large congressional district
→
containsReservation
→
Fort Berthold Indian Reservation
ⓘ
this entity surface form:
Three Affiliated Tribes of the Fort Berthold Reservation