Underground
E709783
Underground is the rapid transit system serving London and some surrounding areas, commonly known as the London Underground or the Tube.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Underground canonical | 10 |
| UNDERGROUND | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8064009 — 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: Underground Context triple: [East Putney tube station, symbol, Underground]
-
A.
Underground
Underground is a 1941 World War II espionage film in which Karen Verne plays a key role, contributing to her recognition as a German-born actress in Hollywood.
-
B.
Underground
Underground is a historical drama television series that follows a group of enslaved people in the pre–Civil War American South as they attempt a daring escape via the Underground Railroad.
-
C.
Underground
Underground is a non-fiction book by Haruki Murakami that explores the 1995 Tokyo subway sarin gas attack through interviews with victims and members of the Aum Shinrikyo cult.
-
D.
Going Underground
"Going Underground" is a politically charged 1980 single by British mod revival band The Jam that became one of their most iconic and commercially successful songs.
-
E.
6 Underground
6 Underground is a 2019 high-octane action film directed by Michael Bay, starring Ryan Reynolds as the leader of a covert vigilante squad that fakes their deaths to take down notorious criminals.
- 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: Underground Target entity description: Underground is the rapid transit system serving London and some surrounding areas, commonly known as the London Underground or the Tube.
-
A.
Underground
Underground is a 1941 World War II espionage film in which Karen Verne plays a key role, contributing to her recognition as a German-born actress in Hollywood.
-
B.
Underground
Underground is a historical drama television series that follows a group of enslaved people in the pre–Civil War American South as they attempt a daring escape via the Underground Railroad.
-
C.
Underground
Underground is a non-fiction book by Haruki Murakami that explores the 1995 Tokyo subway sarin gas attack through interviews with victims and members of the Aum Shinrikyo cult.
-
D.
Going Underground
"Going Underground" is a politically charged 1980 single by British mod revival band The Jam that became one of their most iconic and commercially successful songs.
-
E.
6 Underground
6 Underground is a 2019 high-octane action film directed by Michael Bay, starring Ryan Reynolds as the leader of a covert vigilante squad that fakes their deaths to take down notorious criminals.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
metro system
ⓘ
public transport network ⓘ rapid transit system ⓘ |
| alsoKnownAs |
London Underground
NERFINISHED
ⓘ
the Tube NERFINISHED ⓘ |
| beganOperation | 1863 ⓘ |
| connectsWith |
Docklands Light Railway
NERFINISHED
ⓘ
Elizabeth line NERFINISHED ⓘ London Overground NERFINISHED ⓘ |
| country | United Kingdom ⓘ |
| electrification |
fourth rail
ⓘ
third rail ⓘ |
| fareZones | 1–9 ⓘ |
| hasColourCoding | distinct line colours ⓘ |
| hasFareSystem |
Oyster card
NERFINISHED
ⓘ
Travelcard NERFINISHED ⓘ contactless payment ⓘ |
| hasLine |
Bakerloo line
NERFINISHED
ⓘ
Central line NERFINISHED ⓘ Circle line NERFINISHED ⓘ District line NERFINISHED ⓘ Hammersmith & City line NERFINISHED ⓘ Jubilee line NERFINISHED ⓘ Metropolitan line NERFINISHED ⓘ Northern line NERFINISHED ⓘ Piccadilly line NERFINISHED ⓘ Victoria line NERFINISHED ⓘ Waterloo & City line NERFINISHED ⓘ |
| hasMapStyle | schematic diagram ⓘ |
| hasRollingStockType |
deep-level tube stock
ⓘ
sub-surface stock ⓘ |
| hasServiceType |
deep-level tube lines
ⓘ
sub-surface lines ⓘ |
| hasSymbol | roundel ⓘ |
| notableMapDesigner | Harry Beck NERFINISHED ⓘ |
| numberOfLines | 11 ⓘ |
| numberOfStations | 270 ⓘ |
| operator | London Underground Limited NERFINISHED ⓘ |
| owner | Transport for London NERFINISHED ⓘ |
| parentOrganization | Transport for London NERFINISHED ⓘ |
| partOf | London public transport network NERFINISHED ⓘ |
| primaryMode | heavy rail ⓘ |
| safetySystem |
automatic train protection
ⓘ
train stop system ⓘ |
| servesCity | London NERFINISHED ⓘ |
| servesRegion |
Buckinghamshire
NERFINISHED
ⓘ
Essex NERFINISHED ⓘ Greater London NERFINISHED ⓘ Hertfordshire NERFINISHED ⓘ |
| trackGauge | standard gauge ⓘ |
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: Underground Description of subject: Underground is the rapid transit system serving London and some surrounding areas, commonly known as the London Underground or the Tube.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
UNDERGROUND