Sapperton Tunnel
E698893
Sapperton Tunnel is a historic railway tunnel in Gloucestershire, England, carrying trains through the Cotswolds on the route between Swindon and Gloucester.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sapperton Tunnel canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7840018 — 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: Sapperton Tunnel Context triple: [Golden Valley Line, usesStructure, Sapperton 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.
-
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.
Cressbrook Tunnel
Cressbrook Tunnel is a former railway tunnel in Derbyshire, England, now used as part of the popular Monsal Trail walking and cycling route through the Peak District.
-
D.
Blea Moor Tunnel
Blea Moor Tunnel is a major railway tunnel in North Yorkshire, England, carrying the Settle–Carlisle line beneath Blea Moor in the Yorkshire Dales.
-
E.
Cosgrove Tunnel
Cosgrove Tunnel is a major water-supply conduit in Massachusetts that carries drinking water from the Wachusett Reservoir toward the Boston metropolitan area.
- 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: Sapperton Tunnel Target entity description: Sapperton Tunnel is a historic railway tunnel in Gloucestershire, England, carrying trains through the Cotswolds on the route between Swindon and Gloucester.
-
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.
Cressbrook Tunnel
Cressbrook Tunnel is a former railway tunnel in Derbyshire, England, now used as part of the popular Monsal Trail walking and cycling route through the Peak District.
-
D.
Blea Moor Tunnel
Blea Moor Tunnel is a major railway tunnel in North Yorkshire, England, carrying the Settle–Carlisle line beneath Blea Moor in the Yorkshire Dales.
-
E.
Cosgrove Tunnel
Cosgrove Tunnel is a major water-supply conduit in Massachusetts that carries drinking water from the Wachusett Reservoir toward the Boston metropolitan area.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
railway infrastructure
ⓘ
railway tunnel ⓘ |
| architecturalStyle | Victorian railway engineering ⓘ |
| builder | Great Western Railway NERFINISHED ⓘ |
| carriedBy | Golden Valley Line NERFINISHED ⓘ |
| connects |
Severn basin
NERFINISHED
ⓘ
Thames basin ⓘ |
| constructionStart | 1839 ⓘ |
| country | United Kingdom ⓘ |
| designedBy | Isambard Kingdom Brunel NERFINISHED ⓘ |
| designedFor | Great Western Railway NERFINISHED ⓘ |
| gauge | standard gauge ⓘ |
| hasFeature |
curved alignment
ⓘ
significant gradient ⓘ ventilation shafts ⓘ |
| hasPortal |
eastern portal near Sapperton
ⓘ
western portal near Chalford ⓘ |
| hasSignificance |
example of early long railway tunnel in Britain
ⓘ
important route through the Cotswolds ⓘ |
| heritageStatus | historic railway structure ⓘ |
| length |
approximately 3.2 kilometres
ⓘ
approximately 3500 yards ⓘ |
| locatedIn |
Cotswolds
ⓘ
England ⓘ Gloucestershire ⓘ |
| locatedInProtectedArea | Cotswolds Area of Outstanding Natural Beauty NERFINISHED ⓘ |
| locatedOnRoute | Swindon–Gloucester railway line NERFINISHED ⓘ |
| materialUsed |
brick lining
ⓘ
stone ⓘ |
| nearbySettlement |
Chalford village
NERFINISHED
ⓘ
Sapperton village ⓘ |
| nearbyWatercourse | River Frome (Stroud) valley NERFINISHED ⓘ |
| numberOfTracks | 2 ⓘ |
| openingDate | 1845 ⓘ |
| operatedBy | Network Rail NERFINISHED ⓘ |
| ownedBy | Network Rail ⓘ |
| partOf |
Great Western Railway network
NERFINISHED
ⓘ
Swindon–Gloucester main line NERFINISHED ⓘ |
| passesNear |
Chalford
NERFINISHED
ⓘ
Sapperton NERFINISHED ⓘ Stroud district NERFINISHED ⓘ |
| passesUnder | Cotswold escarpment NERFINISHED ⓘ |
| railwayRegionHistoric | Great Western Railway Western Region NERFINISHED ⓘ |
| status | in use ⓘ |
| usedFor |
freight rail traffic
ⓘ
passenger rail traffic ⓘ |
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: Sapperton Tunnel Description of subject: Sapperton Tunnel is a historic railway tunnel in Gloucestershire, England, carrying trains through the Cotswolds on the route between Swindon and Gloucester.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.