Vienna U1 line
E571419
The Vienna U1 line is one of the main lines of the Vienna U-Bahn rapid transit system, running in a north–south direction and connecting several key districts and transport hubs across the city.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Vienna U1 line canonical | 6 |
| Vienna U-Bahn line U1 | 4 |
| U1 (Vienna U-Bahn) | 1 |
| U1 line (Vienna U-Bahn) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6133620 — 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: Vienna U1 line Context triple: [Leopoldstadt, hasPublicTransport, Vienna U1 line]
-
A.
Vienna S-Bahn
The Vienna S-Bahn is a suburban rail network serving Vienna and its surrounding regions, providing frequent commuter connections that integrate with the city’s public transport system.
-
B.
Vienna–Gänserndorf railway line
The Vienna–Gänserndorf railway line is a regional rail route in eastern Austria that connects Vienna with the town of Gänserndorf and serves as part of the commuter network for the surrounding area.
-
C.
Vienna U-Bahn line U3
Vienna U-Bahn line U3 is a major east–west underground metro line in Vienna, Austria, connecting residential districts with the city center and key transport hubs.
-
D.
Budapest Metro Line 4
Budapest Metro Line 4 is a fully automated rapid transit line in Budapest, Hungary, connecting the city’s southwestern and southeastern districts via a modern east–west underground route.
-
E.
Budapest Metro Line 3
Budapest Metro Line 3 is a major north–south rapid transit line in Budapest, Hungary, serving as one of the city's primary public transportation corridors.
- 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: Vienna U1 line Target entity description: The Vienna U1 line is one of the main lines of the Vienna U-Bahn rapid transit system, running in a north–south direction and connecting several key districts and transport hubs across the city.
-
A.
Vienna S-Bahn
The Vienna S-Bahn is a suburban rail network serving Vienna and its surrounding regions, providing frequent commuter connections that integrate with the city’s public transport system.
-
B.
Vienna–Gänserndorf railway line
The Vienna–Gänserndorf railway line is a regional rail route in eastern Austria that connects Vienna with the town of Gänserndorf and serves as part of the commuter network for the surrounding area.
-
C.
Vienna U-Bahn line U3
Vienna U-Bahn line U3 is a major east–west underground metro line in Vienna, Austria, connecting residential districts with the city center and key transport hubs.
-
D.
Budapest Metro Line 4
Budapest Metro Line 4 is a fully automated rapid transit line in Budapest, Hungary, connecting the city’s southwestern and southeastern districts via a modern east–west underground route.
-
E.
Budapest Metro Line 3
Budapest Metro Line 3 is a major north–south rapid transit line in Budapest, Hungary, serving as one of the city's primary public transportation corridors.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Vienna U-Bahn line
ⓘ
rapid transit line ⓘ |
| connectsAt |
Kagran station
NERFINISHED
ⓘ
Karlsplatz station NERFINISHED ⓘ Praterstern station NERFINISHED ⓘ Stephansplatz station NERFINISHED ⓘ |
| connectsTo |
Vienna Central Station
NERFINISHED
ⓘ
Vienna U2 line NERFINISHED ⓘ Vienna U3 line NERFINISHED ⓘ Vienna U4 line NERFINISHED ⓘ Vienna U6 line NERFINISHED ⓘ |
| direction | north–south ⓘ |
| electrification | third rail ⓘ |
| extendedTo |
Leopoldau station
NERFINISHED
ⓘ
Oberlaa station NERFINISHED ⓘ |
| formerSouthernTerminus | Reumannplatz station NERFINISHED ⓘ |
| hasStation |
Altes Landgut station
NERFINISHED
ⓘ
Kagran station NERFINISHED ⓘ Karlsplatz station NERFINISHED ⓘ Keplerplatz station NERFINISHED ⓘ Leopoldau station NERFINISHED ⓘ Oberlaa station NERFINISHED ⓘ Praterstern station NERFINISHED ⓘ Reumannplatz station NERFINISHED ⓘ Stephansplatz station NERFINISHED ⓘ Südtiroler Platz – Hauptbahnhof station NERFINISHED ⓘ Taubstummengasse station NERFINISHED ⓘ Troststraße station NERFINISHED ⓘ |
| interchangeWithRail |
Wien Hauptbahnhof
NERFINISHED
ⓘ
Wien Praterstern NERFINISHED ⓘ |
| lineColor | red ⓘ |
| lineNumber | U1 ⓘ |
| locatedIn |
Austria
ⓘ
Vienna ⓘ |
| opened | 1978 ⓘ |
| operator | Wiener Linien NERFINISHED ⓘ |
| owner | Wiener Linien NERFINISHED ⓘ |
| partOfNetwork | Vienna U-Bahn network NERFINISHED ⓘ |
| serves |
Vienna Donaustadt district
NERFINISHED
ⓘ
Vienna Favoriten district NERFINISHED ⓘ Vienna Floridsdorf district NERFINISHED ⓘ Vienna Leopoldstadt district NERFINISHED ⓘ Vienna city center NERFINISHED ⓘ |
| system | Vienna U-Bahn NERFINISHED ⓘ |
| terminusNorth | Leopoldau station NERFINISHED ⓘ |
| terminusSouth | Oberlaa station NERFINISHED ⓘ |
| trackGauge | standard gauge ⓘ |
| transportMode | metro ⓘ |
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: Vienna U1 line Description of subject: The Vienna U1 line is one of the main lines of the Vienna U-Bahn rapid transit system, running in a north–south direction and connecting several key districts and transport hubs across the city.
Referenced by (12)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Leopoldstadt
this entity surface form:
Vienna U-Bahn line U1
subject surface form:
U2 (Vienna U-Bahn)
this entity surface form:
U1 (Vienna U-Bahn)
subject surface form:
Karlsplatz Stadtbahn Station
this entity surface form:
U1 line (Vienna U-Bahn)
this entity surface form:
Vienna U-Bahn line U1
this entity surface form:
Vienna U-Bahn line U1
this entity surface form:
Vienna U-Bahn line U1