trolleybus line 21 (Gdynia–Sopot)
E375970
Trolleybus line 21 (Gdynia–Sopot) is an electric public transport route in northern Poland that connects the cities of Gdynia and Sopot within the Gdynia trolleybus network.
All labels observed (2)
| Label | Occurrences |
|---|---|
| trolleybus line 21 | 1 |
| trolleybus line 21 (Gdynia–Sopot) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3630840 — 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: trolleybus line 21 (Gdynia–Sopot) Context triple: [Gdynia trolleybus system, hasPart, trolleybus line 21 (Gdynia–Sopot)]
-
A.
Gdynia trolleybus system
The Gdynia trolleybus system is an electric public transit network in the Polish city of Gdynia, operating trolleybuses on overhead-wire routes as part of the city’s urban transport.
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B.
Trolleybus Line 2
Trolleybus Line 2 is an electric trolleybus route that forms part of an urban public transit network and interchanges with Metrobus Line 5.
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C.
Crimean trolleybus line
The Crimean trolleybus line is a long-distance electric trolleybus route in Crimea, notable for being one of the world’s longest trolleybus lines and connecting cities such as Simferopol, Alushta, and Yalta across mountainous terrain.
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D.
Tram line 25
Tram line 25 is a Dutch tram route that connects Amsterdam with the nearby municipality of Amstelveen as part of the region’s public transport network.
-
E.
Trolebús
Trolebús is an electric trolleybus transit system serving Mexico City as part of its broader 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: trolleybus line 21 (Gdynia–Sopot) Target entity description: Trolleybus line 21 (Gdynia–Sopot) is an electric public transport route in northern Poland that connects the cities of Gdynia and Sopot within the Gdynia trolleybus network.
-
A.
Gdynia trolleybus system
The Gdynia trolleybus system is an electric public transit network in the Polish city of Gdynia, operating trolleybuses on overhead-wire routes as part of the city’s urban transport.
-
B.
Trolleybus Line 2
Trolleybus Line 2 is an electric trolleybus route that forms part of an urban public transit network and interchanges with Metrobus Line 5.
-
C.
Crimean trolleybus line
The Crimean trolleybus line is a long-distance electric trolleybus route in Crimea, notable for being one of the world’s longest trolleybus lines and connecting cities such as Simferopol, Alushta, and Yalta across mountainous terrain.
-
D.
Tram line 25
Tram line 25 is a Dutch tram route that connects Amsterdam with the nearby municipality of Amstelveen as part of the region’s public transport network.
-
E.
Trolebús
Trolebús is an electric trolleybus transit system serving Mexico City as part of its broader public transportation network.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
electric transport route
ⓘ
public transport route ⓘ trolleybus line ⓘ |
| belongsToSystem |
public transport in Gdynia
ⓘ
public transport in Sopot ⓘ |
| connects |
Gdynia
ⓘ
Sopot ⓘ |
| country | Poland ⓘ |
| hasRouteNumber | 21 ⓘ |
| languageOfRouteNumbering | Polish ⓘ |
| locatedIn | northern Poland ⓘ |
| locatedInMetropolitanArea |
Tricity
ⓘ
linked to:
Tricity metropolitan area
|
| networkType | urban trolleybus network ⓘ |
| operatesInCity |
Gdynia
ⓘ
Sopot ⓘ |
| partOf |
Gdynia trolleybus network
ⓘ
linked to:
Gdynia trolleybus system
|
| poweredBy | electricity ⓘ |
| publicTransportType | mass transit ⓘ |
| region | Pomeranian Voivodeship ⓘ |
| servesFunction | intercity connection within metropolitan area ⓘ |
| terminus |
Gdynia
ⓘ
Sopot ⓘ |
| tractionType | electric ⓘ |
| transportMode | trolleybus ⓘ |
| usesInfrastructure | overhead trolley wires ⓘ |
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: trolleybus line 21 (Gdynia–Sopot) Description of subject: Trolleybus line 21 (Gdynia–Sopot) is an electric public transport route in northern Poland that connects the cities of Gdynia and Sopot within the Gdynia trolleybus network.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: trolleybus line 21 (Gdynia–Sopot)