Metro Line 4
E270679
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.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Metro Line 4 canonical | 4 |
| Línia 4 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2391131 — 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: Metro Line 4 Context triple: [Metro Line 6, hasInterchangeWith, Metro Line 4]
-
A.
Metro Line 3
Metro Line 3 is a major Mexico City Metro route that runs north–south across the city, connecting key residential and commercial areas including the Gustavo A. Madero borough.
-
B.
Metro Line 5
Metro Line 5 is a rapid transit route within a city's metro system that connects with Metro Line 6 at one or more interchange stations.
-
C.
Metro Line 54
Metro Line 54 is a rapid transit line in the Amsterdam Metro system that connects the city center with southeastern suburbs such as Bijlmermeer.
-
D.
Metro Line 6
Metro Line 6 is a line of the Mexico City Metro system that serves the northern part of the city, including the Gustavo A. Madero borough.
-
E.
Metro Line 7
Metro Line 7 is a rapid transit route in a metropolitan subway network that connects multiple key districts and serves as an interchange point with several other lines.
- 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: Metro Line 4 Target entity description: 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.
-
A.
Metro Line 3
Metro Line 3 is a major Mexico City Metro route that runs north–south across the city, connecting key residential and commercial areas including the Gustavo A. Madero borough.
-
B.
Metro Line 5
Metro Line 5 is a rapid transit route within a city's metro system that connects with Metro Line 6 at one or more interchange stations.
-
C.
Metro Line 54
Metro Line 54 is a rapid transit line in the Amsterdam Metro system that connects the city center with southeastern suburbs such as Bijlmermeer.
-
D.
Metro Line 6
Metro Line 6 is a line of the Mexico City Metro system that serves the northern part of the city, including the Gustavo A. Madero borough.
-
E.
Metro Line 7
Metro Line 7 is a rapid transit route in a metropolitan subway network that connects multiple key districts and serves as an interchange point with several other lines.
- F. None of above. chosen
Statements (20)
| Predicate | Object |
|---|---|
| instanceOf |
metro line
ⓘ
rapid transit line ⓘ |
| category | public transportation infrastructure ⓘ |
| connectsWith |
Metro Line 6
ⓘ
other metro lines ⓘ |
| enables | cross-line transfers ⓘ |
| hasFunction |
facilitating transfers
ⓘ
passenger transport ⓘ |
| hasInterchange | Metro Line 6 ⓘ |
| hasServiceType | public transport ⓘ |
| infrastructureType | urban rail ⓘ |
| isPartOfNetwork | metro network ⓘ |
| lineNumber | 4 ⓘ |
| networkRole |
cross-network connector
ⓘ
transfer corridor ⓘ |
| operatesIn | urban area ⓘ |
| partOf | city metro system ⓘ |
| supports | interchange between lines ⓘ |
| transportMode | rapid transit ⓘ |
| usedBy | passengers ⓘ |
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: Metro Line 4 Description of subject: 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.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Line 4 (Barcelona Metro)
this entity surface form:
Línia 4