second line of the Warsaw Metro
E905809
The second line of the Warsaw Metro is an east–west rapid transit route in Warsaw, Poland, connecting key districts across the Vistula River and serving as a major component of the city’s public transportation network.
All labels observed (1)
| Label | Occurrences |
|---|---|
| second line of the Warsaw Metro canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11111293 — 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: second line of the Warsaw Metro Context triple: [M2, alsoKnownAs, second line of the Warsaw Metro]
-
A.
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.
-
B.
Milan Metro Line 2
Milan Metro Line 2 is one of the main rapid transit lines in Milan, Italy, running in a predominantly northeast–southwest direction and serving key residential and commercial areas across the city.
-
C.
Line 2 of Saint Petersburg Metro
Line 2 of the Saint Petersburg Metro is one of the city’s main rapid transit lines, running north–south through central Saint Petersburg and serving several key interchange stations.
-
D.
Wilanowska metro station
Wilanowska metro station is a key underground transit stop in Warsaw, Poland, serving the city’s metro network and connecting to surrounding bus and tram routes.
-
E.
Pole Mokotowskie metro station
Pole Mokotowskie metro station is an underground station on Line M1 of the Warsaw Metro serving the Mokotów and Ochota districts near the Pole Mokotowskie park.
- 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: second line of the Warsaw Metro Target entity description: The second line of the Warsaw Metro is an east–west rapid transit route in Warsaw, Poland, connecting key districts across the Vistula River and serving as a major component of the city’s public transportation network.
-
A.
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.
-
B.
Milan Metro Line 2
Milan Metro Line 2 is one of the main rapid transit lines in Milan, Italy, running in a predominantly northeast–southwest direction and serving key residential and commercial areas across the city.
-
C.
Line 2 of Saint Petersburg Metro
Line 2 of the Saint Petersburg Metro is one of the city’s main rapid transit lines, running north–south through central Saint Petersburg and serving several key interchange stations.
-
D.
Wilanowska metro station
Wilanowska metro station is a key underground transit stop in Warsaw, Poland, serving the city’s metro network and connecting to surrounding bus and tram routes.
-
E.
Pole Mokotowskie metro station
Pole Mokotowskie metro station is an underground station on Line M1 of the Warsaw Metro serving the Mokotów and Ochota districts near the Pole Mokotowskie park.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
metro line
ⓘ
public transport infrastructure ⓘ rapid transit line ⓘ |
| city | Warsaw NERFINISHED ⓘ |
| connectsArea |
eastern districts of Warsaw
ⓘ
western districts of Warsaw ⓘ |
| connectsBank |
left bank of the Vistula River
ⓘ
right bank of the Vistula River ⓘ |
| connectsDistrict |
Bemowo
NERFINISHED
ⓘ
Białołęka NERFINISHED ⓘ Mokotów NERFINISHED ⓘ Ochota NERFINISHED ⓘ Praga-Południe NERFINISHED ⓘ Praga-Północ NERFINISHED ⓘ Targówek NERFINISHED ⓘ Ursus NERFINISHED ⓘ Wola NERFINISHED ⓘ Włochy NERFINISHED ⓘ Śródmieście NERFINISHED ⓘ |
| country | Poland ⓘ |
| crosses | Vistula River NERFINISHED ⓘ |
| direction | east–west ⓘ |
| electrification | third rail ⓘ |
| fareIntegrationWith |
Warsaw buses
ⓘ
Warsaw suburban rail NERFINISHED ⓘ Warsaw trams NERFINISHED ⓘ |
| fareSystem | ZTM Warsaw NERFINISHED ⓘ |
| hasFunction | urban passenger transport ⓘ |
| hasRole |
improving cross-river connectivity
ⓘ
relieving traffic congestion in Warsaw ⓘ |
| infrastructureType | underground railway ⓘ |
| isMajorComponentOf | public transportation network of Warsaw ⓘ |
| isPartOf | Warsaw public transport network NERFINISHED ⓘ |
| locatedIn |
Poland
ⓘ
Warsaw ⓘ |
| operator | Metro Warszawskie NERFINISHED ⓘ |
| owner | City of Warsaw NERFINISHED ⓘ |
| partOf | Warsaw Metro NERFINISHED ⓘ |
| riverCrossingType | tunnel under the Vistula River ⓘ |
| servesAs | east–west backbone of Warsaw Metro ⓘ |
| system | Warsaw Metro NERFINISHED ⓘ |
| trackGauge | standard gauge ⓘ |
| transportMode |
metro
ⓘ
rapid transit ⓘ |
| uses | electric multiple units ⓘ |
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: second line of the Warsaw Metro Description of subject: The second line of the Warsaw Metro is an east–west rapid transit route in Warsaw, Poland, connecting key districts across the Vistula River and serving as a major component of the city’s public transportation network.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.