Vienna U2 line
E573842
The Vienna U2 line is one of the city’s main underground metro lines, running across central districts including Leopoldstadt and connecting key cultural, residential, and event areas.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Vienna U-Bahn line U2 | 5 |
| Vienna U2 line canonical | 2 |
| U2 (Vienna U-Bahn) | 1 |
| U2 line (Vienna U-Bahn) | 1 |
| Vienna U-Bahn line U2 (Museumsquartier nearby) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6133621 — 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 U2 line Context triple: [Leopoldstadt, hasPublicTransport, Vienna U2 line]
-
A.
Vienna U1 line
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.
-
B.
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.
-
C.
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.
-
D.
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.
-
E.
Budapest Metro Line 2
Budapest Metro Line 2 is one of the main rapid transit lines in Budapest, running east–west across the city and connecting key central and suburban 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: Vienna U2 line Target entity description: The Vienna U2 line is one of the city’s main underground metro lines, running across central districts including Leopoldstadt and connecting key cultural, residential, and event areas.
-
A.
Vienna U1 line
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.
-
B.
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.
-
C.
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.
-
D.
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.
-
E.
Budapest Metro Line 2
Budapest Metro Line 2 is one of the main rapid transit lines in Budapest, running east–west across the city and connecting key central and suburban areas.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
Vienna U-Bahn line
ⓘ
rapid transit line ⓘ |
| color | purple ⓘ |
| connectsAreaType |
cultural areas
ⓘ
event venues ⓘ residential areas ⓘ |
| connectsToLine |
Vienna U1 line
NERFINISHED
ⓘ
Vienna U3 line NERFINISHED ⓘ Vienna U4 line NERFINISHED ⓘ Vienna U6 line NERFINISHED ⓘ |
| electrification | 750 V DC third rail ⓘ |
| fareSystem | Verkehrsverbund Ost-Region NERFINISHED ⓘ |
| hasAccessibilityFeature |
audio passenger information systems
ⓘ
step-free access at many stations ⓘ visual passenger information systems ⓘ |
| hasFeature |
elevated sections
ⓘ
underground sections ⓘ |
| hasRollingStock | electric multiple units ⓘ |
| lineNumber | U2 NERFINISHED ⓘ |
| locatedIn | Vienna ⓘ |
| locatedInCountry | Austria NERFINISHED ⓘ |
| operator | Wiener Linien NERFINISHED ⓘ |
| partOfNetwork | Vienna public transport network NERFINISHED ⓘ |
| primaryFunction | urban mass transit ⓘ |
| safetySystem | automatic train protection ⓘ |
| servesDistrict |
Donaustadt
NERFINISHED
ⓘ
Favoriten NERFINISHED ⓘ Innere Stadt NERFINISHED ⓘ Landstraße NERFINISHED ⓘ Leopoldstadt NERFINISHED ⓘ |
| servesLandmark |
Donaustadt residential areas
ⓘ
MuseumsQuartier area ⓘ Prater NERFINISHED ⓘ Praterstern transport hub NERFINISHED ⓘ Rathaus area ⓘ Stadion area NERFINISHED ⓘ UNO City area NERFINISHED ⓘ |
| servesPurpose |
daily commuting
ⓘ
event access ⓘ |
| system | Vienna U-Bahn NERFINISHED ⓘ |
| ticketingSystem | integrated with Vienna trams and buses ⓘ |
| 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 U2 line Description of subject: The Vienna U2 line is one of the city’s main underground metro lines, running across central districts including Leopoldstadt and connecting key cultural, residential, and event areas.
Referenced by (10)
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 U2
this entity surface form:
Vienna U-Bahn line U2
this entity surface form:
Vienna U-Bahn line U2
subject surface form:
U1 (Vienna U-Bahn)
this entity surface form:
U2 (Vienna U-Bahn)
this entity surface form:
Vienna U-Bahn line U2 (Museumsquartier nearby)
subject surface form:
Karlsplatz Stadtbahn Station
this entity surface form:
U2 line (Vienna U-Bahn)
this entity surface form:
Vienna U-Bahn line U2
this entity surface form:
Vienna U-Bahn line U2