Line 4 (Rio de Janeiro Metro)
E760638
Line 4 of the Rio de Janeiro Metro is a rapid transit line that connects the city’s South Zone neighborhoods, including Ipanema and Barra da Tijuca, improving east–west urban mobility.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Line 4 (Rio de Janeiro Metro) canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T8796255 — 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 (Rio de Janeiro Metro) Context triple: [General Osório metro station, hasLine, Line 4 (Rio de Janeiro Metro)]
-
A.
São Paulo Metro Line 4-Yellow
São Paulo Metro Line 4-Yellow is a major driverless metro line in São Paulo that connects key central and western districts, easing congestion and integrating with several other lines in the city’s rapid transit network.
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B.
Line 4 (Santiago Metro)
Line 4 of the Santiago Metro is a major rapid transit line in Santiago, Chile, serving key residential and commercial areas in the southeastern part of the city.
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C.
São Paulo Metro Line 3-Red
São Paulo Metro Line 3-Red is one of the main rapid transit lines in São Paulo, Brazil, running east–west through central areas and serving as a heavily used backbone of the city’s metro system.
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D.
Metro Line 4
Metro Line 4 is a rapid transit route within a city's metro system that connects with other lines, including Metro Line 6, to facilitate passenger transfers across the network.
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E.
Rio de Janeiro Metro
The Rio de Janeiro Metro is the rapid transit system serving the city of Rio de Janeiro, Brazil, providing high-capacity urban rail transport across key neighborhoods and metropolitan areas.
- 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 (Rio de Janeiro Metro) Target entity description: Line 4 of the Rio de Janeiro Metro is a rapid transit line that connects the city’s South Zone neighborhoods, including Ipanema and Barra da Tijuca, improving east–west urban mobility.
-
A.
São Paulo Metro Line 4-Yellow
São Paulo Metro Line 4-Yellow is a major driverless metro line in São Paulo that connects key central and western districts, easing congestion and integrating with several other lines in the city’s rapid transit network.
-
B.
Line 4 (Santiago Metro)
Line 4 of the Santiago Metro is a major rapid transit line in Santiago, Chile, serving key residential and commercial areas in the southeastern part of the city.
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C.
São Paulo Metro Line 3-Red
São Paulo Metro Line 3-Red is one of the main rapid transit lines in São Paulo, Brazil, running east–west through central areas and serving as a heavily used backbone of the city’s metro system.
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D.
Metro Line 4
Metro Line 4 is a rapid transit route within a city's metro system that connects with other lines, including Metro Line 6, to facilitate passenger transfers across the network.
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E.
Rio de Janeiro Metro
The Rio de Janeiro Metro is the rapid transit system serving the city of Rio de Janeiro, Brazil, providing high-capacity urban rail transport across key neighborhoods and metropolitan areas.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf | rapid transit line ⓘ |
| cityServed | Rio de Janeiro NERFINISHED ⓘ |
| colorDesignation | yellow ⓘ |
| connectsDirection | east–west ⓘ |
| connectsNeighborhood |
Barra da Tijuca
NERFINISHED
ⓘ
Ipanema NERFINISHED ⓘ |
| connectsWith | Line 1 (Rio de Janeiro Metro) NERFINISHED ⓘ |
| country | Brazil ⓘ |
| electrification | electric traction ⓘ |
| hasTerminus |
Barra da Tijuca region
NERFINISHED
ⓘ
Ipanema–General Osório station NERFINISHED ⓘ |
| infrastructureType |
elevated railway
ⓘ
tunnel ⓘ underground railway ⓘ |
| lineNumber | 4 ⓘ |
| locatedIn |
Brazil
ⓘ
Rio de Janeiro ⓘ Rio de Janeiro (state) NERFINISHED ⓘ |
| operator | MetrôRio NERFINISHED ⓘ |
| owner | State of Rio de Janeiro NERFINISHED ⓘ |
| partOf | Rio de Janeiro Metro NERFINISHED ⓘ |
| primaryFunction | passenger transport ⓘ |
| purpose | improve urban mobility ⓘ |
| railGauge | standard gauge ⓘ |
| regionServed | South Zone of Rio de Janeiro NERFINISHED ⓘ |
| serves |
Barra da Tijuca
NERFINISHED
ⓘ
Ipanema NERFINISHED ⓘ South Zone of Rio de Janeiro NERFINISHED ⓘ |
| systemType | urban rail transit ⓘ |
| transportMode | metro ⓘ |
| usesRollingStock | Rio de Janeiro Metro electric multiple units NERFINISHED ⓘ |
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 (Rio de Janeiro Metro) Description of subject: Line 4 of the Rio de Janeiro Metro is a rapid transit line that connects the city’s South Zone neighborhoods, including Ipanema and Barra da Tijuca, improving east–west urban mobility.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.