1972 Stock
E293563
1972 Stock is a class of London Underground trains built in the early 1970s, primarily used on deep-level tube lines such as the Bakerloo line.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 1972 Stock canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2720810 — 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: 1972 Stock Context triple: [Bakerloo line, stockType, 1972 Stock]
-
A.
1992 Stock
1992 Stock is a type of London Underground electric multiple unit train built for deep-level tube services, notably used on the Central line.
-
B.
Studebaker Avanti
The Studebaker Avanti is a distinctive early-1960s American personal luxury coupe known for its futuristic fiberglass body, performance focus, and status as one of the last iconic models produced by the Studebaker Corporation.
-
C.
A-Model Ford
A-Model Ford is the common name for Ford's late-1920s Model A automobile, a popular successor to the Model T known for its improved performance and modern styling.
-
D.
M-72
M-72 is a state highway in northern Michigan that serves as a key east–west route connecting Traverse City with several inland communities and recreational areas.
-
E.
Republic P-72
The Republic P-72 was an experimental, high-performance American fighter aircraft developed in World War II as an advanced evolution of the P-47 Thunderbolt design.
- 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: 1972 Stock Target entity description: 1972 Stock is a class of London Underground trains built in the early 1970s, primarily used on deep-level tube lines such as the Bakerloo line.
-
A.
1992 Stock
1992 Stock is a type of London Underground electric multiple unit train built for deep-level tube services, notably used on the Central line.
-
B.
Studebaker Avanti
The Studebaker Avanti is a distinctive early-1960s American personal luxury coupe known for its futuristic fiberglass body, performance focus, and status as one of the last iconic models produced by the Studebaker Corporation.
-
C.
A-Model Ford
A-Model Ford is the common name for Ford's late-1920s Model A automobile, a popular successor to the Model T known for its improved performance and modern styling.
-
D.
M-72
M-72 is a state highway in northern Michigan that serves as a key east–west route connecting Traverse City with several inland communities and recreational areas.
-
E.
Republic P-72
The Republic P-72 was an experimental, high-performance American fighter aircraft developed in World War II as an advanced evolution of the P-47 Thunderbolt design.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
London Underground rolling stock
ⓘ
deep-level tube stock ⓘ electric multiple unit ⓘ |
| brakeType | electro-pneumatic brakes ⓘ |
| builtFor |
London Transport Executive
ⓘ
linked to:
London Transport Board
|
| carBodyMaterial | steel ⓘ |
| carHeight | approximately 2.87 m ⓘ |
| carLength | approximately 16.25 m ⓘ |
| carWidth | approximately 2.62 m ⓘ |
| cityOfOperation |
London
ⓘ
linked to:
London, England
|
| constructionEnd | 1975 ⓘ |
| constructionStart | 1972 ⓘ |
| countryOfOperation | United Kingdom ⓘ |
| couplingType | semi-permanent couplers between cars ⓘ |
| designedFor | deep-level tube lines ⓘ |
| designedSpeed | about 70 km/h ⓘ |
| designOrigin | based on 1967 Tube Stock design principles ⓘ |
| doorConfiguration | 4 double-leaf doors per side per car (typical motor car) ⓘ |
| doorControlLocation | driver and guard positions (varied over time) ⓘ |
| doorOperation | guard-operated (originally) ⓘ |
| doorType | sliding air-operated doors ⓘ |
| electrificationSystem | 630 V DC fourth rail ⓘ |
| enteredService | 1973 ⓘ |
| formation |
4-car train
ⓘ
7-car train ⓘ |
| introducedToReplace |
1938 Stock
ⓘ
Standard Stock ⓘ
linked to:
S Stock
|
| livery | red, white and blue (various London Underground liveries over time) ⓘ |
| manufacturer |
British Rail Engineering Limited
ⓘ
Metro-Cammell ⓘ |
| network | London Underground ⓘ |
| operatedOnLine |
Bakerloo line
ⓘ
Jubilee line ⓘ Northern line ⓘ Piccadilly line ⓘ |
| operator | Transport for London ⓘ |
| plannedReplacementBy | new Bakerloo line tube stock (future replacement programme) ⓘ |
| powerCollectionMethod | contact shoe ⓘ |
| powerSupplyToTractionMotors | DC ⓘ |
| primaryCurrentUse | Bakerloo line ⓘ |
| railwayOperator | London Underground ⓘ |
| refurbishment | underwent life-extension refurbishment in the 1990s ⓘ |
| serviceType | passenger service ⓘ |
| trackGauge | 1435 mm standard gauge ⓘ |
| tractionControl | camshaft resistance control ⓘ |
| trainProtectionSystem | tripcock ⓘ |
| usedOnLineHistorically |
Jubilee line
ⓘ
Northern line ⓘ Piccadilly line ⓘ |
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: 1972 Stock Description of subject: 1972 Stock is a class of London Underground trains built in the early 1970s, primarily used on deep-level tube lines such as the Bakerloo line.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.