Line 4 (Madrid Metro)

E146316

metro line rapid transit line

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.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (2)

Label	Occurrences
Line 4 (Madrid Metro) canonical	8
Madrid Metro Line 4	2

How this entity was disambiguated

This entity first appeared as the object of triple T1226489 — 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 (Madrid Metro)
Context triple: [Madrid Metro, hasLine, Line 4 (Madrid Metro)]

A. Line 3 (Madrid Metro)
Line 3 of the Madrid Metro is a major north–south underground line in Madrid, Spain, connecting key central and residential areas and serving as one of the network’s primary transit corridors.
B. Line 2 (Madrid Metro)
Line 2 of the Madrid Metro is one of the system’s main urban rapid transit lines, running in an east–west direction through central Madrid and connecting key neighborhoods and transfer stations.
C. Metro Ligero de Madrid
Metro Ligero de Madrid is a light rail system serving several suburban and peripheral areas of Madrid, complementing the city's main metro network.
D. Madrid Metro
Madrid Metro is the extensive rapid transit system serving Spain’s capital, known for its large network, frequent service, and role as a primary mode of urban transportation.
E. Seville Metro
Seville Metro is a rapid transit system serving the city of Seville and its metropolitan area in southern Spain.
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 (Madrid Metro)
Target entity description: 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.

A. Line 3 (Madrid Metro)
Line 3 of the Madrid Metro is a major north–south underground line in Madrid, Spain, connecting key central and residential areas and serving as one of the network’s primary transit corridors.
B. Line 2 (Madrid Metro)
Line 2 of the Madrid Metro is one of the system’s main urban rapid transit lines, running in an east–west direction through central Madrid and connecting key neighborhoods and transfer stations.
C. Metro Ligero de Madrid
Metro Ligero de Madrid is a light rail system serving several suburban and peripheral areas of Madrid, complementing the city's main metro network.
D. Madrid Metro
Madrid Metro is the extensive rapid transit system serving Spain’s capital, known for its large network, frequent service, and role as a primary mode of urban transportation.
E. Seville Metro
Seville Metro is a rapid transit system serving the city of Seville and its metropolitan area in southern Spain.
F. None of above. chosen

Statements (46)

Predicate	Object
instanceOf	metro line ⓘ rapid transit line ⓘ
character	underground ⓘ
city	Madrid ⓘ
connectsCommercialAreas	Madrid commercial districts ⓘ
connectsResidentialAreas	eastern Madrid ⓘ northern Madrid ⓘ
connectsTo	Cercanías Madrid commuter rail ⓘ surface form: Cercanías Madrid Madrid Metro Line 1 ⓘ surface form: Line 1 (Madrid Metro) Line 2 (Madrid Metro) ⓘ Line 3 (Madrid Metro) ⓘ Line 5 (Madrid Metro) ⓘ Line 6 (Madrid Metro) ⓘ Line 7 (Madrid Metro) ⓘ Line 8 (Madrid Metro) ⓘ Line 9 (Madrid Metro) ⓘ Madrid Metro ⓘ surface form: Madrid Metro network Madrid city buses ⓘ surface form: Madrid city bus network
country	Spain ⓘ
electrification	electric rail system ⓘ
fareCollection	ticket and contactless card system ⓘ
fareSystem	Madrid public transport integrated fare system ⓘ
hasAccessibilityFeatures	yes ⓘ
hasLanguageOfSignage	English ⓘ Spanish ⓘ
hasMode	rail ⓘ
isPartOfNetwork	Madrid Metro ⓘ surface form: Madrid urban rail network
isPublicTransport	yes ⓘ
isUrbanRail	yes ⓘ
locatedIn	Community of Madrid ⓘ Madrid ⓘ Spain ⓘ
networkRole	core line of Madrid Metro ⓘ
operator	Madrid Metro ⓘ surface form: Metro de Madrid
owner	Consorcio Regional de Transportes de Madrid ⓘ
partOf	Madrid Metro ⓘ
rollingStockType	electric multiple units ⓘ
safetySystem	automatic train protection ⓘ
servesArea	eastern districts of Madrid ⓘ northern districts of Madrid ⓘ
servesFunction	connect commercial areas to city centre ⓘ connect residential areas to city centre ⓘ provide east–west connectivity in Madrid ⓘ provide north–south connectivity in Madrid ⓘ
system	Madrid Metro ⓘ
transitType	rapid transit ⓘ

How these facts were elicited

Referenced by (10)

Full triples — surface form annotated when it differs from this entity's canonical label.

Madrid Metro → hasLine → Line 4 (Madrid Metro) ⓘ

Line 3 (Madrid Metro) → connectsWithLine → Line 4 (Madrid Metro) ⓘ

Metro Ligero de Madrid → connectsWith → Line 4 (Madrid Metro) ⓘ

this entity surface form: Madrid Metro Line 4

Line 2 (Madrid Metro) → connectsWith → Line 4 (Madrid Metro) ⓘ

Line 5 (Madrid Metro) → connectsWith → Line 4 (Madrid Metro) ⓘ

Line 8 (Madrid Metro) → adjacentTo → Line 4 (Madrid Metro) ⓘ

Line 6 (Madrid Metro) → hasInterchangeWith → Line 4 (Madrid Metro) ⓘ

Line 7 (Madrid Metro) → connectsWithLine → Line 4 (Madrid Metro) ⓘ

Line 9 (Madrid Metro) → connectsWith → Line 4 (Madrid Metro) ⓘ

Salamanca district of Madrid → transportServedBy → Line 4 (Madrid Metro) ⓘ

subject surface form: Salamanca (Madrid)