Hamburg U-Bahn line U2
E896601
Hamburg U-Bahn line U2 is a major rapid transit line in Hamburg’s underground network, running across the city to connect central districts with outlying residential areas such as Niendorf.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Hamburg U-Bahn line U2 canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T10950820 — 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: Hamburg U-Bahn line U2 Context triple: [Niendorf, hasPublicTransportConnection, Hamburg U-Bahn line U2]
-
A.
Hamburg U-Bahn line U1
Hamburg U-Bahn line U1 is a major rapid transit line in Hamburg’s underground network, running from the city center through several northern and northeastern districts to suburban areas.
-
B.
Hamburg U-Bahn line U3
Hamburg U-Bahn line U3 is a historic circular metro line that runs largely above ground, offering key transit service and scenic views through central and harbor areas of Hamburg.
-
C.
Berlin U-Bahn line U2
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.
-
D.
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.
-
E.
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.
- 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: Hamburg U-Bahn line U2 Target entity description: Hamburg U-Bahn line U2 is a major rapid transit line in Hamburg’s underground network, running across the city to connect central districts with outlying residential areas such as Niendorf.
-
A.
Hamburg U-Bahn line U1
Hamburg U-Bahn line U1 is a major rapid transit line in Hamburg’s underground network, running from the city center through several northern and northeastern districts to suburban areas.
-
B.
Hamburg U-Bahn line U3
Hamburg U-Bahn line U3 is a historic circular metro line that runs largely above ground, offering key transit service and scenic views through central and harbor areas of Hamburg.
-
C.
Berlin U-Bahn line U2
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.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Hamburg U-Bahn line
ⓘ
rapid transit line ⓘ |
| character |
surface
ⓘ
underground ⓘ |
| cityServed | Hamburg NERFINISHED ⓘ |
| connects |
Niendorf residential area
NERFINISHED
ⓘ
central Hamburg ⓘ outlying residential areas ⓘ |
| connectsWithLine |
Hamburg U-Bahn line U1
NERFINISHED
ⓘ
Hamburg U-Bahn line U3 NERFINISHED ⓘ Hamburg U-Bahn line U4 NERFINISHED ⓘ |
| country | Germany NERFINISHED ⓘ |
| electrification | third rail 750 V DC ⓘ |
| fareSystem | HVV NERFINISHED ⓘ |
| hasRollingStock |
DT4 trains
NERFINISHED
ⓘ
DT5 trains NERFINISHED ⓘ |
| hasStation |
Berliner Tor station
NERFINISHED
ⓘ
Billstedt station NERFINISHED ⓘ Gänsemarkt station NERFINISHED ⓘ Hagenbecks Tierpark station NERFINISHED ⓘ Hauptbahnhof Nord station NERFINISHED ⓘ Horner Rennbahn station NERFINISHED ⓘ Jungfernstieg station NERFINISHED ⓘ Messehallen station NERFINISHED ⓘ Mümmelmannsberg station NERFINISHED ⓘ Niendorf Markt station NERFINISHED ⓘ Niendorf Nord station NERFINISHED ⓘ Schlump station NERFINISHED ⓘ |
| lineColor | red ⓘ |
| lineNumber | U2 NERFINISHED ⓘ |
| locale | Free and Hanseatic City of Hamburg NERFINISHED ⓘ |
| locatedIn | Hamburg metropolitan region NERFINISHED ⓘ |
| mapSymbol | white U on blue square with red line designation ⓘ |
| modeOfTransport | metro ⓘ |
| numberOfTracks | 2 ⓘ |
| operator | Hamburger Hochbahn AG NERFINISHED ⓘ |
| owner | Hamburger Hochbahn AG NERFINISHED ⓘ |
| partOfNetwork | Hamburg U-Bahn network NERFINISHED ⓘ |
| publicTransportType | U-Bahn ⓘ |
| servesArea | Hamburg city centre NERFINISHED ⓘ |
| servesDistrict |
Billstedt
NERFINISHED
ⓘ
Eimsbüttel NERFINISHED ⓘ Niendorf NERFINISHED ⓘ Wandsbek NERFINISHED ⓘ |
| system | Hamburg U-Bahn NERFINISHED ⓘ |
| terminus |
Mümmelmannsberg station
NERFINISHED
ⓘ
Niendorf Nord 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: Hamburg U-Bahn line U2 Description of subject: Hamburg U-Bahn line U2 is a major rapid transit line in Hamburg’s underground network, running across the city to connect central districts with outlying residential areas such as Niendorf.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Kennedybrücke (Hamburg)