Budapest Metro Line 4
E360724
Budapest Metro Line 4 is a fully automated rapid transit line in Budapest, Hungary, connecting the city’s southwestern and southeastern districts via a modern east–west underground route.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Budapest Metro Line 4 canonical | 4 |
| Budapest Metro line M4 | 2 |
| Budapest Metro Line M4 | 1 |
| M4 (Budapest Metro Line 4) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3336609 — 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: Budapest Metro Line 4 Context triple: [Budapest Metro, hasLine, Budapest Metro Line 4]
-
A.
Budapest Metro Line 3
Budapest Metro Line 3 is a major north–south rapid transit line in Budapest, Hungary, serving as one of the city's primary public transportation corridors.
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B.
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.
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C.
Budapest Metro
The Budapest Metro is the rapid transit system serving Hungary’s capital, notable for including Line 1, one of the oldest electrified underground railway lines in continental Europe.
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D.
Budapest Cog-wheel Railway
The Budapest Cog-wheel Railway is a historic rack railway line in Budapest that climbs the steep slopes of the Buda Hills, serving both commuters and tourists with scenic hillside transport.
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E.
Budapest Nyugati railway station
Budapest Nyugati railway station is one of Budapest’s main historic railway terminals, notable for its grand 19th-century iron-and-glass architecture designed by the Eiffel Company.
- 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: Budapest Metro Line 4 Target entity description: Budapest Metro Line 4 is a fully automated rapid transit line in Budapest, Hungary, connecting the city’s southwestern and southeastern districts via a modern east–west underground route.
-
A.
Budapest Metro Line 3
Budapest Metro Line 3 is a major north–south rapid transit line in Budapest, Hungary, serving as one of the city's primary public transportation corridors.
-
B.
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.
-
C.
Budapest Metro
The Budapest Metro is the rapid transit system serving Hungary’s capital, notable for including Line 1, one of the oldest electrified underground railway lines in continental Europe.
-
D.
Budapest Cog-wheel Railway
The Budapest Cog-wheel Railway is a historic rack railway line in Budapest that climbs the steep slopes of the Buda Hills, serving both commuters and tourists with scenic hillside transport.
-
E.
Budapest Nyugati railway station
Budapest Nyugati railway station is one of Budapest’s main historic railway terminals, notable for its grand 19th-century iron-and-glass architecture designed by the Eiffel Company.
- F. None of above. chosen
Statements (49)
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: Budapest Metro Line 4 Description of subject: Budapest Metro Line 4 is a fully automated rapid transit line in Budapest, Hungary, connecting the city’s southwestern and southeastern districts via a modern east–west underground route.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
M4 (Budapest Metro Line 4)
this entity surface form:
Budapest Metro Line M4
this entity surface form:
Budapest Metro line M4
this entity surface form:
Budapest Metro line M4