Middle Fork San Joaquin River
E430123
The Middle Fork San Joaquin River is a major Sierra Nevada waterway in California that flows through the Ansel Adams Wilderness and Devils Postpile National Monument, featuring notable cascades such as Rainbow Falls.
All labels observed (4)
| Label | Occurrences |
|---|---|
| San Joaquin River Middle Fork | 3 |
| Middle Fork San Joaquin River canonical | 2 |
| Middle Fork of the San Joaquin River | 2 |
| San Joaquin River middle fork | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2442093 — 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: Middle Fork San Joaquin River Context triple: [Rainbow Falls (Mammoth Lakes), watercourse, Middle Fork San Joaquin River]
-
A.
Middle Fork American River
The Middle Fork American River is a popular whitewater rafting and kayaking destination in California’s Sierra Nevada, known for its scenic canyon, challenging rapids, and historic gold-mining sites.
-
B.
Feather River
The Feather River is a major tributary of the Sacramento River in Northern California, known for its extensive role in the state’s water supply, hydroelectric power generation, and flood control.
-
C.
North Fork American River
The North Fork American River is a major tributary of California’s American River, known for its rugged canyon scenery, whitewater recreation, and relatively undisturbed natural habitat in the Sierra Nevada foothills.
-
D.
South Fork American River
The South Fork American River is a major tributary of California’s American River in the Sierra Nevada foothills, renowned for its historical role in the Gold Rush and its popular whitewater rafting runs.
-
E.
Fresno River
The Fresno River is a waterway in central California that flows through the Sierra Nevada foothills and the San Joaquin Valley, contributing to the region’s agriculture and lending its name to Fresno County.
- 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: Middle Fork San Joaquin River Target entity description: The Middle Fork San Joaquin River is a major Sierra Nevada waterway in California that flows through the Ansel Adams Wilderness and Devils Postpile National Monument, featuring notable cascades such as Rainbow Falls.
-
A.
Middle Fork American River
The Middle Fork American River is a popular whitewater rafting and kayaking destination in California’s Sierra Nevada, known for its scenic canyon, challenging rapids, and historic gold-mining sites.
-
B.
Feather River
The Feather River is a major tributary of the Sacramento River in Northern California, known for its extensive role in the state’s water supply, hydroelectric power generation, and flood control.
-
C.
North Fork American River
The North Fork American River is a major tributary of California’s American River, known for its rugged canyon scenery, whitewater recreation, and relatively undisturbed natural habitat in the Sierra Nevada foothills.
-
D.
South Fork American River
The South Fork American River is a major tributary of California’s American River in the Sierra Nevada foothills, renowned for its historical role in the Gold Rush and its popular whitewater rafting runs.
-
E.
Fresno River
The Fresno River is a waterway in central California that flows through the Sierra Nevada foothills and the San Joaquin Valley, contributing to the region’s agriculture and lending its name to Fresno County.
- F. None of above. chosen
Statements (45)
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: Middle Fork San Joaquin River Description of subject: The Middle Fork San Joaquin River is a major Sierra Nevada waterway in California that flows through the Ansel Adams Wilderness and Devils Postpile National Monument, featuring notable cascades such as Rainbow Falls.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Rainbow Falls
linked to: Middle Fork San Joaquin River
linked to: Middle Fork San Joaquin River
linked to: Middle Fork San Joaquin River
linked to: Middle Fork San Joaquin River
linked to: Middle Fork San Joaquin River
linked to: Middle Fork San Joaquin River