Line 4 (Barcelona Metro)
E876926
Line 4 of the Barcelona Metro is a key rapid transit line serving several central and coastal neighborhoods, including the Barceloneta and Poblenou areas.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Line 4 (Barcelona Metro) canonical | 6 |
How this entity was disambiguated
This entity first appeared as the object of triple T10574731 — 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: Line 4 (Barcelona Metro) Context triple: [Line 1 (Barcelona Metro), connectsWith, Line 4 (Barcelona Metro)]
-
A.
Line 3 (Barcelona Metro)
Line 3 of the Barcelona Metro is one of the city’s main rapid transit lines, running in a roughly diagonal route across central Barcelona and serving many key commercial and tourist areas.
-
B.
Line 5 (Barcelona Metro)
Line 5 of the Barcelona Metro is a major rapid transit line that runs across the city from Cornellà Centre to Vall d’Hebron, serving key residential and commercial areas.
-
C.
Line 4 (Madrid Metro)
Line 4 of the Madrid Metro is a rapid transit line serving several northern and eastern districts of Madrid, connecting key residential and commercial areas to the city’s broader subway network.
-
D.
Barcelona Metro Line 2
Barcelona Metro Line 2 is a rapid transit line in the Barcelona metropolitan network that connects central Barcelona with the nearby coastal city of Badalona.
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E.
Barcelona Metro L1
Barcelona Metro L1 is one of the main lines of the Barcelona Metro network, running on a largely east–west axis and connecting key districts and transport hubs across the city.
- 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: Line 4 (Barcelona Metro) Target entity description: Line 4 of the Barcelona Metro is a key rapid transit line serving several central and coastal neighborhoods, including the Barceloneta and Poblenou areas.
-
A.
Line 3 (Barcelona Metro)
Line 3 of the Barcelona Metro is one of the city’s main rapid transit lines, running in a roughly diagonal route across central Barcelona and serving many key commercial and tourist areas.
-
B.
Line 5 (Barcelona Metro)
Line 5 of the Barcelona Metro is a major rapid transit line that runs across the city from Cornellà Centre to Vall d’Hebron, serving key residential and commercial areas.
-
C.
Line 4 (Madrid Metro)
Line 4 of the Madrid Metro is a rapid transit line serving several northern and eastern districts of Madrid, connecting key residential and commercial areas to the city’s broader subway network.
-
D.
Barcelona Metro Line 2
Barcelona Metro Line 2 is a rapid transit line in the Barcelona metropolitan network that connects central Barcelona with the nearby coastal city of Badalona.
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E.
Barcelona Metro L1
Barcelona Metro L1 is one of the main lines of the Barcelona Metro network, running on a largely east–west axis and connecting key districts and transport hubs across the city.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | metro line ⓘ |
| alsoKnownAs |
Línia 4
NERFINISHED
ⓘ
Línia groga NERFINISHED ⓘ |
| connectsWithLine |
Line 1 (Barcelona Metro)
NERFINISHED
ⓘ
Line 11 (Barcelona Metro) NERFINISHED ⓘ Line 2 (Barcelona Metro) NERFINISHED ⓘ Line 3 (Barcelona Metro) NERFINISHED ⓘ Line 5 (Barcelona Metro) NERFINISHED ⓘ |
| country | Spain ⓘ |
| electrification | 1,200 V DC third rail ⓘ |
| hasStation |
Alfons X
NERFINISHED
ⓘ
Barceloneta NERFINISHED ⓘ Bogatell NERFINISHED ⓘ Ciutadella–Vila Olímpica NERFINISHED ⓘ El Maresme–Fòrum NERFINISHED ⓘ Guinardó–Hospital de Sant Pau NERFINISHED ⓘ Joanic NERFINISHED ⓘ La Pau NERFINISHED ⓘ Llacuna NERFINISHED ⓘ Llucmajor NERFINISHED ⓘ Maragall NERFINISHED ⓘ Passeig de Gràcia NERFINISHED ⓘ Poblenou NERFINISHED ⓘ Selva de Mar NERFINISHED ⓘ Trinitat Nova NERFINISHED ⓘ Urquinaona NERFINISHED ⓘ Verdaguer NERFINISHED ⓘ Via Júlia NERFINISHED ⓘ |
| lineColor | yellow ⓘ |
| locale | Catalonia NERFINISHED ⓘ |
| numberOfStations | 22 ⓘ |
| openingYear | 1973 ⓘ |
| operator | Transports Metropolitans de Barcelona NERFINISHED ⓘ |
| partOf | Barcelona Metro NERFINISHED ⓘ |
| servesArea |
Barcelona coastline
ⓘ
central Barcelona ⓘ |
| servesCity | Barcelona NERFINISHED ⓘ |
| servesNeighborhood |
Barceloneta
NERFINISHED
ⓘ
Ciutat Vella NERFINISHED ⓘ Eixample NERFINISHED ⓘ Poblenou NERFINISHED ⓘ Sant Martí NERFINISHED ⓘ |
| shortName | L4 ⓘ |
| systemLength_km | approximately 16.7 ⓘ |
| terminusStation |
La Pau
NERFINISHED
ⓘ
Trinitat Nova NERFINISHED ⓘ |
| trackGauge | 1,435 mm ⓘ |
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: Line 4 (Barcelona Metro) Description of subject: Line 4 of the Barcelona Metro is a key rapid transit line serving several central and coastal neighborhoods, including the Barceloneta and Poblenou areas.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Line 1 (Barcelona Metro)
subject surface form:
Line 2 (Barcelona Metro)
subject surface form:
Line 9 (Barcelona Metro)
subject surface form:
Line 3 (Barcelona Metro)
subject surface form:
Line 5 (Barcelona Metro)
subject surface form:
Line 11 (Barcelona Metro)