M621
E940649
M621 is a short urban motorway in West Yorkshire, England, linking the M62 and M1 motorways and providing access to Leeds city centre.
All labels observed (1)
| Label | Occurrences |
|---|---|
| M621 canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T11681788 — 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: M621 Context triple: [M621 motorway, roadNumber, M621]
-
A.
M602
M602 is a motorway in Greater Manchester, England, serving as a key link between the M60/M62 and central Salford and Manchester.
-
B.
M62
M62 is a major trans-Pennine motorway in northern England connecting cities such as Liverpool, Manchester, Leeds, and Hull.
-
C.
M61
M61 is a major motorway in North West England connecting Manchester with Preston and linking into the wider UK motorway network.
-
D.
M260
The M260 is a lightweight, three-tube rocket launcher pod commonly mounted on helicopters and aircraft to fire 70 mm Hydra rockets.
-
E.
M26
The M26 is a U.S. World War II–era heavy/medium tank, commonly known as the M26 Pershing, that served as a precursor to the American Patton tank series.
- 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: M621 Target entity description: M621 is a short urban motorway in West Yorkshire, England, linking the M62 and M1 motorways and providing access to Leeds city centre.
-
A.
M602
M602 is a motorway in Greater Manchester, England, serving as a key link between the M60/M62 and central Salford and Manchester.
-
B.
M62
M62 is a major trans-Pennine motorway in northern England connecting cities such as Liverpool, Manchester, Leeds, and Hull.
-
C.
M61
M61 is a major motorway in North West England connecting Manchester with Preston and linking into the wider UK motorway network.
-
D.
M260
The M260 is a lightweight, three-tube rocket launcher pod commonly mounted on helicopters and aircraft to fire 70 mm Hydra rockets.
-
E.
M26
The M26 is a U.S. World War II–era heavy/medium tank, commonly known as the M26 Pershing, that served as a precursor to the American Patton tank series.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
motorway
ⓘ
road in England ⓘ |
| connectsTo |
M1
ⓘ
M62 ⓘ |
| country | England ⓘ |
| hasCountryCode | GB ⓘ |
| hasDirection |
eastbound
ⓘ
westbound ⓘ |
| hasFunction |
distributor for Leeds city traffic
ⓘ
link between M62 and M1 near Leeds ⓘ |
| hasJunctionWith |
M1
ⓘ
M62 ⓘ |
| hasRoadNumber | M621 ⓘ |
| hasSpeedLimit | 70 mph (national motorway speed limit) ⓘ |
| isNumberedWithin | M6xx series ⓘ |
| locatedIn |
Leeds
ⓘ
United Kingdom ⓘ West Yorkshire ⓘ |
| maintainedBy | National Highways ⓘ |
| partOf | British motorway network ⓘ |
| passesNear |
Beeston, Leeds
ⓘ
Holbeck, Leeds ⓘ
linked to:
Holbeck
Hunslet, Leeds ⓘ
linked to:
Hunslet
|
| providesAccessTo |
Leeds city centre
ⓘ
linked to:
Leeds city centre retail area
|
| region | Yorkshire and the Humber ⓘ |
| roadClassification | motorway (M-class) ⓘ |
| roadSurface | asphalt ⓘ |
| roadType | urban motorway ⓘ |
| serves | Leeds ⓘ |
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: M621 Description of subject: M621 is a short urban motorway in West Yorkshire, England, linking the M62 and M1 motorways and providing access to Leeds city centre.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.