Mad River
E558760
Mad River is a tributary stream in New Hampshire that feeds into the Pemigewasset River within the Merrimack River watershed.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Mad River canonical | 6 |
| Mad River (New Hampshire) | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T3308256 — 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: Mad River Context triple: [Pemigewasset River, hasTributary, Mad River]
-
A.
Mad River
Mad River is a tributary of the Great Miami River in western Ohio known for its clear, cold waters and popularity for fishing and paddling.
-
B.
Waters River
Waters River is a small waterway in Massachusetts that flows through the town of Danvers.
-
C.
Mad River (Vermont)
Mad River (Vermont) is a scenic mountain river in central Vermont known for its clear waters, popular trout fishing, and role in regional outdoor recreation.
-
D.
Contoocook River
The Contoocook River is a scenic river in southern New Hampshire known for its northward flow and popular recreational activities such as fishing, paddling, and whitewater boating.
-
E.
Flat River
Flat River is a tributary stream in North Carolina that feeds into the Neuse River within the state’s Piedmont region.
- 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: Mad River Target entity description: Mad River is a tributary stream in New Hampshire that feeds into the Pemigewasset River within the Merrimack River watershed.
-
A.
Mad River
Mad River is a tributary of the Great Miami River in western Ohio known for its clear, cold waters and popularity for fishing and paddling.
-
B.
Waters River
Waters River is a small waterway in Massachusetts that flows through the town of Danvers.
-
C.
Mad River (Vermont)
Mad River (Vermont) is a scenic mountain river in central Vermont known for its clear waters, popular trout fishing, and role in regional outdoor recreation.
-
D.
Contoocook River
The Contoocook River is a scenic river in southern New Hampshire known for its northward flow and popular recreational activities such as fishing, paddling, and whitewater boating.
-
E.
Flat River
Flat River is a tributary stream in North Carolina that feeds into the Neuse River within the state’s Piedmont region.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| basinCountry |
United States
ⓘ
linked to:
United States of America
|
| country |
United States
ⓘ
linked to:
United States of America
|
| crossedBy | New Hampshire Route 49 ⓘ |
| flowsDirection | generally northwest ⓘ |
| flowsThrough |
Campton, New Hampshire
ⓘ
Thornton, New Hampshire ⓘ Waterville Valley, New Hampshire ⓘ |
| hasTributary |
Avalanche Brook
ⓘ
Drakes Brook ⓘ Flume Brook ⓘ Smarts Brook ⓘ West Branch Mad River ⓘ |
| length | approximately 17 miles ⓘ |
| locatedIn |
Grafton County, New Hampshire
ⓘ
linked to:
Grafton County
New Hampshire ⓘ White Mountains ⓘ |
| mouthLocation | Campton, New Hampshire ⓘ |
| mouthOf | Pemigewasset River ⓘ |
| partOf |
Merrimack River watershed
ⓘ
Pemigewasset River watershed ⓘ |
| region | New England ⓘ |
| riverSystem |
Merrimack River
ⓘ
Pemigewasset River ⓘ |
| sourceLocation |
Sandwich Range
ⓘ
White Mountain National Forest ⓘ |
| usedFor |
fishing
ⓘ
recreation ⓘ whitewater kayaking ⓘ |
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: Mad River Description of subject: Mad River is a tributary stream in New Hampshire that feeds into the Pemigewasset River within the Merrimack River watershed.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Mad River
linked to: Mad River