Cosgrove Tunnel
E479804
Cosgrove Tunnel is a major water-supply conduit in Massachusetts that carries drinking water from the Wachusett Reservoir toward the Boston metropolitan area.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Cosgrove Tunnel canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4892025 — 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: Cosgrove Tunnel Context triple: [Wachusett Reservoir, outflow, Cosgrove Tunnel]
-
A.
Blisworth Tunnel
Blisworth Tunnel is one of the longest navigable canal tunnels in Britain, carrying the Grand Union Canal beneath the Northamptonshire countryside.
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B.
Braunston Tunnel
Braunston Tunnel is a long 19th-century canal tunnel in Northamptonshire, England, forming a key part of the historic Grand Union Canal route.
-
C.
Malpas Tunnel
Malpas Tunnel is a historic canal tunnel in southern France, notable as one of the first navigable tunnels built for the Canal du Midi in the 17th century.
-
D.
Harecastle Tunnel
Harecastle Tunnel is a historic and notoriously long canal tunnel in Staffordshire, England, known for its low, narrow passage and role in improving industrial-era transport on the Trent and Mersey Canal.
-
E.
Foulridge Tunnel
Foulridge Tunnel is a historic canal tunnel in Lancashire, England, carrying the Leeds and Liverpool Canal beneath the village of Foulridge and surrounding hills.
- 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: Cosgrove Tunnel Target entity description: Cosgrove Tunnel is a major water-supply conduit in Massachusetts that carries drinking water from the Wachusett Reservoir toward the Boston metropolitan area.
-
A.
Blisworth Tunnel
Blisworth Tunnel is one of the longest navigable canal tunnels in Britain, carrying the Grand Union Canal beneath the Northamptonshire countryside.
-
B.
Braunston Tunnel
Braunston Tunnel is a long 19th-century canal tunnel in Northamptonshire, England, forming a key part of the historic Grand Union Canal route.
-
C.
Malpas Tunnel
Malpas Tunnel is a historic canal tunnel in southern France, notable as one of the first navigable tunnels built for the Canal du Midi in the 17th century.
-
D.
Harecastle Tunnel
Harecastle Tunnel is a historic and notoriously long canal tunnel in Staffordshire, England, known for its low, narrow passage and role in improving industrial-era transport on the Trent and Mersey Canal.
-
E.
Foulridge Tunnel
Foulridge Tunnel is a historic canal tunnel in Lancashire, England, carrying the Leeds and Liverpool Canal beneath the village of Foulridge and surrounding hills.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
infrastructure
ⓘ
water conduit ⓘ water-supply tunnel ⓘ |
| connects |
Wachusett Reservoir
NERFINISHED
ⓘ
downstream MWRA aqueducts and tunnels ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| endPoint |
Boston metropolitan area water-distribution system
ⓘ
MetroWest Water Supply Tunnel system NERFINISHED ⓘ |
| function |
transport raw water
ⓘ
transport treated drinking water ⓘ |
| infrastructureType | aqueduct tunnel ⓘ |
| locatedIn |
Greater Boston
ⓘ
Massachusetts ⓘ Middlesex County, Massachusetts ⓘ Worcester County, Massachusetts NERFINISHED ⓘ |
| locatedInHydrologicSystem | Quabbin–Wachusett water system NERFINISHED ⓘ |
| locatedNear |
Clinton, Massachusetts
NERFINISHED
ⓘ
Marlborough, Massachusetts NERFINISHED ⓘ Northborough, Massachusetts NERFINISHED ⓘ Southborough, Massachusetts NERFINISHED ⓘ |
| managedBy | Massachusetts Water Resources Authority NERFINISHED ⓘ |
| materialTransported |
drinking water
ⓘ
freshwater ⓘ |
| medium | underground tunnel ⓘ |
| operator | Massachusetts Water Resources Authority NERFINISHED ⓘ |
| owner | Massachusetts Water Resources Authority NERFINISHED ⓘ |
| partOf |
MWRA water distribution network
NERFINISHED
ⓘ
Massachusetts water-supply system NERFINISHED ⓘ |
| publicUtilityType | water supply infrastructure ⓘ |
| purpose | deliver potable water to metropolitan Boston ⓘ |
| regionServed |
Greater Boston
ⓘ
eastern Massachusetts NERFINISHED ⓘ |
| serves |
Boston
NERFINISHED
ⓘ
Boston metropolitan area NERFINISHED ⓘ eastern Massachusetts communities ⓘ |
| significance |
critical drinking-water infrastructure for Massachusetts
ⓘ
major component of Boston regional water supply ⓘ |
| startPoint |
Cosgrove Intake
NERFINISHED
ⓘ
Wachusett Reservoir NERFINISHED ⓘ |
| use |
drinking water conveyance
ⓘ
municipal water supply ⓘ |
| waterSource |
Quabbin–Wachusett water system
NERFINISHED
ⓘ
Wachusett Reservoir 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: Cosgrove Tunnel Description of subject: Cosgrove Tunnel is a major water-supply conduit in Massachusetts that carries drinking water from the Wachusett Reservoir toward the Boston metropolitan area.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.