North South Line
E668996
The North South Line is one of Singapore’s main Mass Rapid Transit (MRT) lines, running in a generally north–south direction and connecting key residential towns like Woodlands with the city centre.
All labels observed (1)
| Label | Occurrences |
|---|---|
| North South Line canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T7508556 — 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: North South Line Context triple: [Woodlands, servedByMRTLine, North South Line]
-
A.
North–South Line
The North–South Line is a major Amsterdam Metro route that runs largely underground, connecting the city’s northern districts with the center and the south.
-
B.
East–West Line
The East–West Line was the original name for what is now MARTA’s Blue Line, a major rapid transit route serving the Atlanta metropolitan area.
-
C.
MRT Grey Line
The MRT Grey Line is a planned rapid transit route within the MRT subway network designed to expand urban rail connectivity along its corridor.
-
D.
MRT Orange Line
The MRT Orange Line is a rapid transit route in Bangkok’s Mass Rapid Transit system designed to connect key eastern and western parts of the city.
-
E.
Northeast Line
The Northeast Line, now known as MARTA's Gold Line, is a rapid transit route serving key northeastern suburbs and neighborhoods of Atlanta, Georgia.
- 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: North South Line Target entity description: The North South Line is one of Singapore’s main Mass Rapid Transit (MRT) lines, running in a generally north–south direction and connecting key residential towns like Woodlands with the city centre.
-
A.
North–South Line
The North–South Line is a major Amsterdam Metro route that runs largely underground, connecting the city’s northern districts with the center and the south.
-
B.
East–West Line
The East–West Line was the original name for what is now MARTA’s Blue Line, a major rapid transit route serving the Atlanta metropolitan area.
-
C.
MRT Grey Line
The MRT Grey Line is a planned rapid transit route within the MRT subway network designed to expand urban rail connectivity along its corridor.
-
D.
MRT Orange Line
The MRT Orange Line is a rapid transit route in Bangkok’s Mass Rapid Transit system designed to connect key eastern and western parts of the city.
-
E.
Northeast Line
The Northeast Line, now known as MARTA's Gold Line, is a rapid transit route serving key northeastern suburbs and neighborhoods of Atlanta, Georgia.
- F. None of above. chosen
Statements (58)
| Predicate | Object |
|---|---|
| instanceOf |
Mass Rapid Transit line
ⓘ
railway line ⓘ rapid transit line ⓘ |
| colorOnSystemMap | red ⓘ |
| connectsArea | Central Area of Singapore NERFINISHED ⓘ |
| connectsResidentialArea |
Ang Mo Kio
NERFINISHED
ⓘ
Bishan NERFINISHED ⓘ Bukit Batok NERFINISHED ⓘ Bukit Gombak NERFINISHED ⓘ Choa Chu Kang NERFINISHED ⓘ Toa Payoh NERFINISHED ⓘ Woodlands NERFINISHED ⓘ Yishun NERFINISHED ⓘ |
| country | Singapore ⓘ |
| depot |
Bishan Depot
NERFINISHED
ⓘ
Mandai Depot NERFINISHED ⓘ Ulu Pandan Depot NERFINISHED ⓘ |
| direction | north–south ⓘ |
| electrification | 750 V DC third rail ⓘ |
| formerTerminus |
City Hall MRT station
NERFINISHED
ⓘ
Marina Bay MRT station NERFINISHED ⓘ Raffles Place MRT station NERFINISHED ⓘ Toa Payoh MRT station NERFINISHED ⓘ Yio Chu Kang MRT station NERFINISHED ⓘ Yishun MRT station NERFINISHED ⓘ |
| hasStation |
Ang Mo Kio MRT station
NERFINISHED
ⓘ
Bishan MRT station NERFINISHED ⓘ City Hall MRT station NERFINISHED ⓘ Jurong East MRT station NERFINISHED ⓘ Marina South Pier MRT station NERFINISHED ⓘ Raffles Place MRT station NERFINISHED ⓘ Toa Payoh MRT station NERFINISHED ⓘ Woodlands MRT station NERFINISHED ⓘ Yishun MRT station NERFINISHED ⓘ |
| interchangeWith |
Circle Line
NERFINISHED
ⓘ
Downtown Line NERFINISHED ⓘ East West Line NERFINISHED ⓘ North East Line NERFINISHED ⓘ Thomson–East Coast Line NERFINISHED ⓘ |
| lineLength_km | 45 ⓘ |
| locale | Singapore NERFINISHED ⓘ |
| numberOfStations | 27 ⓘ |
| openingDate | 1987-11-07 ⓘ |
| operator | SMRT Trains NERFINISHED ⓘ |
| owner | Land Transport Authority NERFINISHED ⓘ |
| rollingStock |
Kawasaki Heavy Industries C151
NERFINISHED
ⓘ
Kawasaki–CRRC Qingdao Sifang C151C NERFINISHED ⓘ Kawasaki–CSR Qingdao Sifang C151A NERFINISHED ⓘ Kawasaki–CSR Qingdao Sifang C151B NERFINISHED ⓘ Kawasaki–Nippon Sharyo C751B NERFINISHED ⓘ RRC Qingdao Sifang C151D NERFINISHED ⓘ Siemens C651 NERFINISHED ⓘ |
| servedCity | Singapore NERFINISHED ⓘ |
| signallingSystem | Communications-based train control NERFINISHED ⓘ |
| system | Singapore MRT NERFINISHED ⓘ |
| terminus |
Jurong East MRT station
NERFINISHED
ⓘ
Marina South Pier MRT station NERFINISHED ⓘ |
| trackGauge | standard gauge ⓘ |
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: North South Line Description of subject: The North South Line is one of Singapore’s main Mass Rapid Transit (MRT) lines, running in a generally north–south direction and connecting key residential towns like Woodlands with the city centre.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.