Prague Metro
E84295
The Prague Metro is the rapid transit system serving the Czech capital, known for its three main lines, deep underground stations, and role as the backbone of the city's public transportation network.
All labels observed (9)
| Label | Occurrences |
|---|---|
| Prague Metro canonical | 27 |
| Line B (Prague Metro) | 2 |
| Prague Metro Line A | 2 |
| Prague Metro Line B | 2 |
| Line A (Prague Metro) | 1 |
| Line C (Prague Metro) | 1 |
| Prague Metro Line C | 1 |
| Prague Metro map | 1 |
| Prague Metro network | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T708899 — 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: Prague Metro Context triple: [Prague, hasPublicTransport, Prague Metro]
-
A.
Budapest Metro
The Budapest Metro is the rapid transit system serving Hungary’s capital, notable for including Line 1, one of the oldest electrified underground railway lines in continental Europe.
-
B.
Warsaw Metro
The Warsaw Metro is the rapid transit system serving Poland's capital, consisting of underground lines that connect key districts across the city.
-
C.
Copenhagen Metro
Copenhagen Metro is a rapid transit system in Copenhagen, Denmark, known for its driverless trains, frequent service, and extensive underground and elevated lines connecting key parts of the city and suburbs.
-
D.
Moscow Metro
The Moscow Metro is a major rapid transit system in Moscow renowned for its extensive network, high passenger capacity, and ornately decorated stations often likened to underground palaces.
-
E.
Chemnitz Stadtbahn
Chemnitz Stadtbahn is a light rail and tram-train system in Chemnitz, Germany, that integrates urban tram lines with regional railway services to provide seamless public transport across the city and surrounding areas.
- 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: Prague Metro Target entity description: The Prague Metro is the rapid transit system serving the Czech capital, known for its three main lines, deep underground stations, and role as the backbone of the city's public transportation network.
-
A.
Budapest Metro
The Budapest Metro is the rapid transit system serving Hungary’s capital, notable for including Line 1, one of the oldest electrified underground railway lines in continental Europe.
-
B.
Warsaw Metro
The Warsaw Metro is the rapid transit system serving Poland's capital, consisting of underground lines that connect key districts across the city.
-
C.
Copenhagen Metro
Copenhagen Metro is a rapid transit system in Copenhagen, Denmark, known for its driverless trains, frequent service, and extensive underground and elevated lines connecting key parts of the city and suburbs.
-
D.
Moscow Metro
The Moscow Metro is a major rapid transit system in Moscow renowned for its extensive network, high passenger capacity, and ornately decorated stations often likened to underground palaces.
-
E.
Chemnitz Stadtbahn
Chemnitz Stadtbahn is a light rail and tram-train system in Chemnitz, Germany, that integrates urban tram lines with regional railway services to provide seamless public transport across the city and surrounding areas.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
metro system
ⓘ
rapid transit system ⓘ |
| averageDepth | significant proportion of stations are deep-level ⓘ |
| beganOperation | 1974 ⓘ |
| connectsTo |
Prague city buses
ⓘ
Prague commuter rail ⓘ Prague trams ⓘ Václav Havel Airport Prague via bus links ⓘ |
| country | Czech Republic ⓘ |
| electrification | 750 V DC third rail ⓘ |
| fareControl | proof-of-payment system ⓘ |
| fareSystem | integrated with Prague Integrated Transport ⓘ |
| firstLineOpened | Line C ⓘ |
| hasFeature |
transfer hubs in city center
ⓘ
underground stations ⓘ |
| hasInterchangeStation |
Florenc
ⓘ
Muzeum ⓘ Můstek ⓘ |
| hasLine |
Line A
ⓘ
Line B ⓘ Line C ⓘ |
| hasRollingStock |
M1 trains
ⓘ
Soviet-built 81-71 trains (modernized variants) ⓘ |
| hasStation |
Dejvická
ⓘ
Florenc ⓘ Hlavní nádraží ⓘ Háje ⓘ Letňany ⓘ Muzeum ⓘ Můstek ⓘ Nádraží Holešovice ⓘ Zličín ⓘ Černý Most ⓘ |
| lineColor |
Line A – green
ⓘ
Line B – yellow ⓘ Line C – red ⓘ |
| numberOfLines | 3 ⓘ |
| numberOfStations | over 60 ⓘ |
| openingDate | 1974-05-09 ⓘ |
| operator | Dopravní podnik hl. m. Prahy ⓘ |
| owner |
Prague
ⓘ
surface form:
City of Prague
|
| peakFunction | high-capacity urban transport corridor ⓘ |
| primaryRole | backbone of Prague public transport ⓘ |
| safetyFeature |
civil defense shelters in some stations
ⓘ
extensive escalator systems in deep stations ⓘ |
| serves | Prague ⓘ |
| systemLength | over 60 km ⓘ |
| ticketing |
time-based tickets
ⓘ
zone-based fares within integrated system ⓘ |
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: Prague Metro Description of subject: The Prague Metro is the rapid transit system serving the Czech capital, known for its three main lines, deep underground stations, and role as the backbone of the city's public transportation network.
Referenced by (38)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Prague Metro Line A
this entity surface form:
Prague Metro Line B
this entity surface form:
Prague Metro Line A
this entity surface form:
Prague Metro Line B
this entity surface form:
Prague Metro Line C
this entity surface form:
Line A (Prague Metro)
this entity surface form:
Line B (Prague Metro)
this entity surface form:
Line C (Prague Metro)
subject surface form:
Line A (Prague Metro)
this entity surface form:
Line B (Prague Metro)
subject surface form:
Line C (Prague Metro)
this entity surface form:
Prague Metro network
subject surface form:
Line B (Prague Metro)
this entity surface form:
Prague Metro map