Berlin U-Bahn line U2
E660283
Berlin U-Bahn line U2 is one of the main metro lines in Berlin, running east–west across the city and connecting key central districts and landmarks.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Berlin U-Bahn line U2 canonical | 4 |
| U2 (Berlin U-Bahn line) | 1 |
| U2 line (Märkisches Museum station nearby) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7366912 — 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: Berlin U-Bahn line U2 Context triple: [Potsdamer Platz station, railwayLineServed, Berlin U-Bahn line U2]
-
A.
Berlin U-Bahn line U6
Berlin U-Bahn line U6 is a major north–south underground metro line in Berlin that connects the northern district of Tegel with southern neighborhoods through the city center.
-
B.
Berlin U-Bahn line U5
Berlin U-Bahn line U5 is a major underground metro line in Berlin that runs east–west across the city, connecting central hubs like Alexanderplatz and Brandenburger Tor with eastern districts such as Lichtenberg and Hönow.
-
C.
Berlin U-Bahn line U7
Berlin U-Bahn line U7 is one of the city's major underground metro lines, running in a long east–west arc across numerous districts and serving as a key backbone of Berlin’s public transport network.
-
D.
Berlin U-Bahn line U4
Berlin U-Bahn line U4 is one of the shortest and oldest lines in Berlin’s subway network, running entirely within the Schöneberg district and connecting a small number of central stations.
-
E.
Berlin U-Bahn
The Berlin U-Bahn is the German capital’s extensive underground rapid transit system, forming a core part of its public transportation network.
- 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: Berlin U-Bahn line U2 Target entity description: Berlin U-Bahn line U2 is one of the main metro lines in Berlin, running east–west across the city and connecting key central districts and landmarks.
-
A.
Berlin U-Bahn line U6
Berlin U-Bahn line U6 is a major north–south underground metro line in Berlin that connects the northern district of Tegel with southern neighborhoods through the city center.
-
B.
Berlin U-Bahn line U5
Berlin U-Bahn line U5 is a major underground metro line in Berlin that runs east–west across the city, connecting central hubs like Alexanderplatz and Brandenburger Tor with eastern districts such as Lichtenberg and Hönow.
-
C.
Berlin U-Bahn line U7
Berlin U-Bahn line U7 is one of the city's major underground metro lines, running in a long east–west arc across numerous districts and serving as a key backbone of Berlin’s public transport network.
-
D.
Berlin U-Bahn line U4
Berlin U-Bahn line U4 is one of the shortest and oldest lines in Berlin’s subway network, running entirely within the Schöneberg district and connecting a small number of central stations.
-
E.
Berlin U-Bahn
The Berlin U-Bahn is the German capital’s extensive underground rapid transit system, forming a core part of its public transportation network.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Berlin U-Bahn line
ⓘ
rapid transit line ⓘ |
| connectsDistrict |
Charlottenburg-Wilmersdorf
NERFINISHED
ⓘ
Friedrichshain-Kreuzberg NERFINISHED ⓘ Mitte NERFINISHED ⓘ Pankow NERFINISHED ⓘ Spandau NERFINISHED ⓘ |
| connectsKeyCentralDistricts | true ⓘ |
| connectsLandmark |
Alexanderplatz
NERFINISHED
ⓘ
Berlin Zoological Garden NERFINISHED ⓘ Olympiastadion Berlin NERFINISHED ⓘ Potsdamer Platz NERFINISHED ⓘ |
| country | Germany NERFINISHED ⓘ |
| direction | east–west ⓘ |
| electrification | third rail ⓘ |
| fareSystem | Verkehrsverbund Berlin-Brandenburg NERFINISHED ⓘ |
| fareZone | Berlin AB NERFINISHED ⓘ |
| hasColorOnMap | red ⓘ |
| hasElevatedSections | true ⓘ |
| hasInterchangeWith |
Berlin S-Bahn network
NERFINISHED
ⓘ
Berlin U-Bahn line U1 NERFINISHED ⓘ Berlin U-Bahn line U3 NERFINISHED ⓘ Berlin U-Bahn line U4 NERFINISHED ⓘ Berlin U-Bahn line U5 NERFINISHED ⓘ Berlin U-Bahn line U6 NERFINISHED ⓘ Berlin U-Bahn line U7 NERFINISHED ⓘ Berlin U-Bahn line U8 NERFINISHED ⓘ Berlin U-Bahn line U9 NERFINISHED ⓘ |
| hasUndergroundSections | true ⓘ |
| lineNumber | 2 ⓘ |
| locatedIn | Berlin NERFINISHED ⓘ |
| openedAsPartOf | early Berlin U-Bahn network ⓘ |
| operator | Berliner Verkehrsbetriebe NERFINISHED ⓘ |
| partOfNetwork | small profile network of Berlin U-Bahn ⓘ |
| passesThrough |
Alexanderplatz
NERFINISHED
ⓘ
Olympia-Stadion area NERFINISHED ⓘ Potsdamer Platz NERFINISHED ⓘ Wittenbergplatz NERFINISHED ⓘ Zoologischer Garten station NERFINISHED ⓘ |
| primaryOrientation | east–west axis across central Berlin ⓘ |
| rollingStockType | small-profile U-Bahn trains ⓘ |
| serviceType |
metro
ⓘ
urban rail ⓘ |
| shortName | U2 NERFINISHED ⓘ |
| system | Berlin U-Bahn NERFINISHED ⓘ |
| terminus |
Pankow station
NERFINISHED
ⓘ
Ruhleben station 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: Berlin U-Bahn line U2 Description of subject: Berlin U-Bahn line U2 is one of the main metro lines in Berlin, running east–west across the city and connecting key central districts and landmarks.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Hausvogteiplatz (Berlin U-Bahn station)
this entity surface form:
U2 (Berlin U-Bahn line)
this entity surface form:
U2 line (Märkisches Museum station nearby)