A21 road
E107643
The A21 road is a major route in southeast England that connects London with Hastings on the south coast, passing through Kent and East Sussex.
All labels observed (2)
| Label | Occurrences |
|---|---|
| A21 road canonical | 26 |
| A21 trunk road | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T592814 — 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: A21 road Context triple: [M25 motorway, hasJunctionWith, A21 road]
-
A.
A12 road
The A12 road is a major trunk route in eastern England that connects London with coastal towns in Essex and Suffolk before continuing toward Norfolk.
-
B.
A25 road
The A25 road is an important east–west route in South East England that runs through Surrey and connects several towns between Guildford and Sevenoaks.
-
C.
A14 road
The A14 road is a major trunk route in England that links the Midlands to the East Coast, serving as a key freight and commuter corridor including through Cambridgeshire.
-
D.
A24 road
The A24 road is a major route in southeast England that connects London to the south coast, passing through counties such as Surrey and West Sussex.
-
E.
A13 road
The A13 road is a major east–west route in southern England connecting central London with the Thames Gateway and Essex.
- 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: A21 road Target entity description: The A21 road is a major route in southeast England that connects London with Hastings on the south coast, passing through Kent and East Sussex.
-
A.
A12 road
The A12 road is a major trunk route in eastern England that connects London with coastal towns in Essex and Suffolk before continuing toward Norfolk.
-
B.
A25 road
The A25 road is an important east–west route in South East England that runs through Surrey and connects several towns between Guildford and Sevenoaks.
-
C.
A14 road
The A14 road is a major trunk route in England that links the Midlands to the East Coast, serving as a key freight and commuter corridor including through Cambridgeshire.
-
D.
A24 road
The A24 road is a major route in southeast England that connects London to the south coast, passing through counties such as Surrey and West Sussex.
-
E.
A13 road
The A13 road is a major east–west route in southern England connecting central London with the Thames Gateway and Essex.
- F. None of above. chosen
Statements (38)
| Predicate | Object |
|---|---|
| instanceOf |
A road in Great Britain
ⓘ
road ⓘ |
| category |
Roads in England
ⓘ
Transport in East Sussex ⓘ Transport in Kent ⓘ |
| connects |
Hastings
ⓘ
London ⓘ
linked to:
London, England
|
| country | United Kingdom ⓘ |
| directionA | north ⓘ |
| directionB | south ⓘ |
| hasJunctionWith |
A2100 road
NERFINISHED
ⓘ
A228 road NERFINISHED ⓘ A259 road NERFINISHED ⓘ A26 road ⓘ M25 motorway ⓘ |
| hasSection |
dual carriageway sections
ⓘ
single carriageway sections ⓘ |
| isMajorRouteFor | traffic between London and Hastings ⓘ |
| locatedIn | England ⓘ |
| maintainedBy | National Highways ⓘ |
| partOf | road network of England ⓘ |
| passesNear |
High Weald Area of Outstanding Natural Beauty
ⓘ
Sevenoaks Weald ⓘ |
| passesThrough |
County of Kent
ⓘ
linked to:
County of Kent, England
East Sussex ⓘ |
| region | South East England ⓘ |
| roadNumberingScheme | Great Britain A and B road numbering scheme ⓘ |
| roadType | primary route ⓘ |
| routeNumber | A21 ⓘ |
| serves |
Battle
ⓘ
Hastings urban area ⓘ Pembury ⓘ Robertsbridge ⓘ Sevenoaks ⓘ Tonbridge ⓘ Tunbridge Wells area ⓘ
linked to:
Tunbridge Wells borough
|
| terminusA |
London
ⓘ
linked to:
London, England
|
| terminusB | Hastings ⓘ |
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: A21 road Description of subject: The A21 road is a major route in southeast England that connects London with Hastings on the south coast, passing through Kent and East Sussex.
Referenced by (27)
Full triples — surface form annotated when it differs from this entity's canonical label.