Line 4
E207163
Line 4 is a circular rapid transit route of the Shanghai Metro system that loops around central districts and provides key transfer connections across the network.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Line 4 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1768692 — 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 Context triple: [Shanghai Metro, hasLine, Line 4]
-
A.
Line 4
Line 4 is a route of Mexico City’s Metrobús bus rapid transit system that serves key corridors with dedicated lanes and high-capacity articulated buses.
-
B.
Line 4
Line 4 is a major line of the Santiago Metro in Chile, serving key residential and commercial areas in the southeastern part of the city.
-
C.
Line 4
Line 4 is a rapid transit line of the Guangzhou Metro system in Guangzhou, China, serving key urban and suburban areas along its north–south corridor.
-
D.
Line 4
Line 4 is one of the main lines of the Tehran Metro rapid transit system, serving key east–west corridors across Iran’s capital city.
-
E.
Line 4
Line 4 is a major north–south rapid transit route in the Beijing Subway system, serving key commercial, residential, and university areas of 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 Target entity description: Line 4 is a circular rapid transit route of the Shanghai Metro system that loops around central districts and provides key transfer connections across the network.
-
A.
Line 4
Line 4 is a route of Mexico City’s Metrobús bus rapid transit system that serves key corridors with dedicated lanes and high-capacity articulated buses.
-
B.
Line 4
Line 4 is a major line of the Santiago Metro in Chile, serving key residential and commercial areas in the southeastern part of the city.
-
C.
Line 4
Line 4 is a major north–south rapid transit route in the Beijing Subway system, serving key commercial, residential, and university areas of the city.
-
D.
Line 4
Line 4 is a rapid transit line of the Guangzhou Metro system in Guangzhou, China, serving key urban and suburban areas along its north–south corridor.
-
E.
Line 4
Line 4 is one of the main lines of the Tehran Metro rapid transit system, serving key east–west corridors across Iran’s capital city.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
circle line
ⓘ
metro line ⓘ rapid transit line ⓘ |
| character | underground and elevated ⓘ |
| connectsWith |
Line 1 (Shanghai Metro)
ⓘ
linked to:
Shanghai Metro Line 1
Line 10 (Shanghai Metro) ⓘ
linked to:
Shanghai Metro Line 10
Line 11 (Shanghai Metro) ⓘ
linked to:
Shanghai Metro Line 11
Line 12 (Shanghai Metro) ⓘ
linked to:
Shanghai Metro Line 12
Line 13 (Shanghai Metro) ⓘ
linked to:
Shanghai Metro Line 13
Line 2 (Shanghai Metro) ⓘ
linked to:
Shanghai Metro Line 2
Line 3 (Shanghai Metro) ⓘ
linked to:
Shanghai Metro Line 3
Line 5 (Shanghai Metro) ⓘ
linked to:
Shanghai Metro Line 5
Line 6 (Shanghai Metro) ⓘ
linked to:
Shanghai Metro Line 6
Line 7 (Shanghai Metro) ⓘ
linked to:
Shanghai Metro Line 7
Line 8 (Shanghai Metro) ⓘ
linked to:
Shanghai Metro Line 8
Line 9 (Shanghai Metro) ⓘ
linked to:
Shanghai Metro Line 9
|
| country | China ⓘ |
| crosses | Huangpu River ⓘ |
| electrification | overhead line ⓘ |
| fareIntegration | integrated with other Shanghai Metro lines ⓘ |
| fareSystem | Shanghai Metro unified fare system ⓘ |
| hasFeature | interchange-intensive line ⓘ |
| hasPlatformScreenDoors | yes ⓘ |
| hasServicePattern |
inner loop
ⓘ
outer loop ⓘ |
| languageOfSignage |
Chinese
ⓘ
English ⓘ |
| lineColor | purple ⓘ |
| lineNumber | 4 ⓘ |
| locatedIn |
China
ⓘ
Shanghai ⓘ |
| loopsAround | central districts of Shanghai ⓘ |
| operator | Shanghai Shentong Metro Group ⓘ |
| partOf | Shanghai Metro ⓘ |
| primaryFunction | orbital distribution of passenger flows ⓘ |
| provides | cross-network transfer connections ⓘ |
| routeType | circular ⓘ |
| safetySystem |
automatic train operation
ⓘ
automatic train protection ⓘ |
| serves |
Pudong
ⓘ
linked to:
Pudong New Area
Puxi ⓘ |
| serviceType | rapid transit ⓘ |
| system | Shanghai Metro ⓘ |
| ticketing |
contactless smart card accepted
ⓘ
single-journey tickets accepted ⓘ |
| trackGauge | standard gauge ⓘ |
| usesRollingStock | Shanghai Metro Type A trains ⓘ |
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 Description of subject: Line 4 is a circular rapid transit route of the Shanghai Metro system that loops around central districts and provides key transfer connections across the network.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.