LMS Princess Royal Class
E88865
The LMS Princess Royal Class was a series of powerful British express passenger steam locomotives built in the 1930s for high-speed mainline services on the London, Midland and Scottish Railway.
All labels observed (5)
How this entity was disambiguated
This entity first appeared as the object of triple T746045 — 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: LMS Princess Royal Class Context triple: [London, Midland and Scottish Railway, notableLocomotiveClass, LMS Princess Royal Class]
-
A.
Class 170 Turbostar
The Class 170 Turbostar is a British diesel multiple-unit train widely used for regional and intercity services across the UK rail network.
-
B.
Marchioness
A Marchioness is a noblewoman holding the rank of marquess or marquis, positioned above a baroness in the hierarchy of European aristocratic titles.
-
C.
Royal Yacht Britannia
The Royal Yacht Britannia is the former British royal family yacht, now a museum ship permanently moored in Edinburgh’s Port of Leith.
-
D.
M7 electric multiple unit
The M7 electric multiple unit is a modern commuter rail car class built for high-frequency, third-rail electrified service, notably operating on New York’s Long Island Rail Road and similar regional rail networks.
-
E.
Class 397 Civity EMU
The Class 397 Civity EMU is a modern high-speed electric multiple unit built by CAF for intercity services in the UK, notably on routes linking north of England cities with Scotland.
- 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: LMS Princess Royal Class Target entity description: The LMS Princess Royal Class was a series of powerful British express passenger steam locomotives built in the 1930s for high-speed mainline services on the London, Midland and Scottish Railway.
-
A.
Class 170 Turbostar
The Class 170 Turbostar is a British diesel multiple-unit train widely used for regional and intercity services across the UK rail network.
-
B.
Marchioness
A Marchioness is a noblewoman holding the rank of marquess or marquis, positioned above a baroness in the hierarchy of European aristocratic titles.
-
C.
Royal Yacht Britannia
The Royal Yacht Britannia is the former British royal family yacht, now a museum ship permanently moored in Edinburgh’s Port of Leith.
-
D.
M7 electric multiple unit
The M7 electric multiple unit is a modern commuter rail car class built for high-frequency, third-rail electrified service, notably operating on New York’s Long Island Rail Road and similar regional rail networks.
-
E.
Class 397 Civity EMU
The Class 397 Civity EMU is a modern high-speed electric multiple unit built by CAF for intercity services in the UK, notably on routes linking north of England cities with Scotland.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
express passenger locomotive class
ⓘ
steam locomotive class ⓘ |
| brakeType | vacuum brake ⓘ |
| buildDate | 1933–1935 ⓘ |
| builtBy |
Crewe Works
ⓘ
surface form:
LMS Crewe Works
|
| category |
4-6-2 locomotives
ⓘ
LMS locomotives ⓘ standard gauge steam locomotives of Great Britain ⓘ |
| configuration |
Pacific Ocean
ⓘ
surface form:
Pacific
|
| country | United Kingdom ⓘ |
| cylinderArrangement | three-cylinder ⓘ |
| cylinderCount | 3 ⓘ |
| designer |
William Stanier
ⓘ
surface form:
Sir William Stanier
William Stanier ⓘ |
| followedBy | LMS Coronation Class ⓘ |
| fuelType | coal ⓘ |
| gauge | standard gauge ⓘ |
| heritageStatus | two examples preserved in working order at various times ⓘ |
| introduced | 1933 ⓘ |
| namedAfter | British princesses ⓘ |
| notableLocomotive |
6200 Princess Royal
ⓘ
6201 Princess Elizabeth ⓘ |
| numberBuilt | 13 ⓘ |
| numberPreserved | 2 ⓘ |
| operator |
British Rail
ⓘ
surface form:
British Railways
London, Midland and Scottish Railway ⓘ |
| operatorPeriod |
British Transport Commission
ⓘ
surface form:
British Railways 1948–1962
LMS 1933–1947 ⓘ |
| powerClassification | LMS power class 7P ⓘ |
| powerType | steam ⓘ |
| precededBy | LMS Royal Scot Class ⓘ |
| preservedLocomotive |
LMS Princess Royal Class
self-linksurface differs
ⓘ
surface form:
LMS Princess Royal Class 46203 Princess Margaret Rose
LMS Princess Royal Class self-linksurface differs ⓘ
surface form:
LMS Princess Royal Class 6201 Princess Elizabeth
|
| primaryRoute | West Coast Main Line ⓘ |
| purpose | express passenger services ⓘ |
| railwayCompany | London, Midland and Scottish Railway ⓘ |
| railwayRegion |
London, Midland and Scottish Railway
ⓘ
surface form:
LMS London Midland and Scottish main line
|
| region | London Midland Region ⓘ |
| successorClass | LMS Coronation Class ⓘ |
| trackGauge | 1435 mm ⓘ |
| trainHeating | steam heat ⓘ |
| UICClassification | 2′C1′ h3 ⓘ |
| usedFor | high-speed mainline services ⓘ |
| usedOn | London–Glasgow expresses ⓘ |
| wheelArrangement | 4-6-2 ⓘ |
| withdrawalDate |
1962
ⓘ
1963 ⓘ |
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: LMS Princess Royal Class Description of subject: The LMS Princess Royal Class was a series of powerful British express passenger steam locomotives built in the 1930s for high-speed mainline services on the London, Midland and Scottish Railway.
Referenced by (12)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
LMS Princess Coronation Class
this entity surface form:
locomotive Duchess of Hamilton
LMS Princess Royal Class
→
preservedLocomotive
→
LMS Princess Royal Class
self-linksurface differs
ⓘ
this entity surface form:
LMS Princess Royal Class 6201 Princess Elizabeth
LMS Princess Royal Class
→
preservedLocomotive
→
LMS Princess Royal Class
self-linksurface differs
ⓘ
this entity surface form:
LMS Princess Royal Class 46203 Princess Margaret Rose