Metro Purple Line
E844582
Metro Purple Line was the former name of Los Angeles Metro’s D Line, a heavy-rail subway route serving key destinations between downtown Los Angeles and the city’s western neighborhoods.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Metro Purple Line canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10142454 — 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 Purple Line Context triple: [Metro D Line, formerName, Metro Purple Line]
-
A.
Tokyu Meguro Line
The Tokyu Meguro Line is a commuter railway line in Tokyo and Kanagawa operated by Tokyu Corporation, linking central Tokyo with its southwestern suburbs and offering through services onto various subway and other private railway lines.
-
B.
Tokyu Den-en-toshi Line
Tokyu Den-en-toshi Line is a major private railway line in the Tokyo metropolitan area that connects central Tokyo with suburban residential districts, including service to Shibuya.
-
C.
Tokyu Setagaya Line
The Tokyu Setagaya Line is a light rail/tram line in Tokyo, Japan, operated by Tokyu Corporation and known for connecting Sangen-Jaya with the Setagaya area along a short, mostly street-level route.
-
D.
Toei Mita Line
The Toei Mita Line is a Tokyo subway line operated by the Tokyo Metropolitan Bureau of Transportation, running north–south through the city and connecting central Tokyo with its northern suburbs.
-
E.
Tokyo Metro Marunouchi Line
The Tokyo Metro Marunouchi Line is one of Tokyo’s main subway lines, running in a loop-like route through central districts and connecting major hubs such as Shinjuku, Tokyo, and Ikebukuro.
- 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 Purple Line Target entity description: Metro Purple Line was the former name of Los Angeles Metro’s D Line, a heavy-rail subway route serving key destinations between downtown Los Angeles and the city’s western neighborhoods.
-
A.
Tokyu Meguro Line
The Tokyu Meguro Line is a commuter railway line in Tokyo and Kanagawa operated by Tokyu Corporation, linking central Tokyo with its southwestern suburbs and offering through services onto various subway and other private railway lines.
-
B.
Tokyu Den-en-toshi Line
Tokyu Den-en-toshi Line is a major private railway line in the Tokyo metropolitan area that connects central Tokyo with suburban residential districts, including service to Shibuya.
-
C.
Tokyu Setagaya Line
The Tokyu Setagaya Line is a light rail/tram line in Tokyo, Japan, operated by Tokyu Corporation and known for connecting Sangen-Jaya with the Setagaya area along a short, mostly street-level route.
-
D.
Toei Mita Line
The Toei Mita Line is a Tokyo subway line operated by the Tokyo Metropolitan Bureau of Transportation, running north–south through the city and connecting central Tokyo with its northern suburbs.
-
E.
Tokyo Metro Marunouchi Line
The Tokyo Metro Marunouchi Line is one of Tokyo’s main subway lines, running in a loop-like route through central districts and connecting major hubs such as Shinjuku, Tokyo, and Ikebukuro.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
rapid transit line
ⓘ
subway line ⓘ |
| alignment | underground subway ⓘ |
| color | purple ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| electrification | 750 V DC third rail ⓘ |
| fareMedium | contactless smart card ⓘ |
| farePolicy | distance-insensitive flat fare ⓘ |
| fareSystem | TAP card NERFINISHED ⓘ |
| formerNameOf | D Line (Los Angeles Metro) NERFINISHED ⓘ |
| hasFormerName | Metro Purple Line NERFINISHED ⓘ |
| hasStation |
7th Street/Metro Center station
NERFINISHED
ⓘ
Civic Center/Grand Park station NERFINISHED ⓘ Pershing Square station NERFINISHED ⓘ Union Station NERFINISHED ⓘ Westlake/MacArthur Park station NERFINISHED ⓘ Wilshire/Normandie station NERFINISHED ⓘ Wilshire/Vermont station NERFINISHED ⓘ Wilshire/Western station NERFINISHED ⓘ |
| isSubcomponentOf | Los Angeles County public transportation network ⓘ |
| lineLength | approximately 6.4 miles ⓘ |
| lineLetter | D NERFINISHED ⓘ |
| locatedIn |
Los Angeles County
ⓘ
surface form:
Los Angeles County, California
|
| mode | rail ⓘ |
| numberOfStations | 8 ⓘ |
| opened | 1993 ⓘ |
| operator | Los Angeles County Metropolitan Transportation Authority NERFINISHED ⓘ |
| owner | Los Angeles County Metropolitan Transportation Authority NERFINISHED ⓘ |
| partOf | Los Angeles Metro Rail NERFINISHED ⓘ |
| primaryFunction | urban passenger transport ⓘ |
| rebrandedAs | D Line NERFINISHED ⓘ |
| regionServed | central Los Angeles NERFINISHED ⓘ |
| rollingStock |
Kinkisharyo P3010
NERFINISHED
ⓘ
Nippon Sharyo P2020 NERFINISHED ⓘ Nippon Sharyo P865 NERFINISHED ⓘ |
| safetySystem | automatic train control ⓘ |
| servesCity | Los Angeles NERFINISHED ⓘ |
| servesCorridor | Wilshire Boulevard NERFINISHED ⓘ |
| servesNeighborhood |
Downtown Los Angeles
NERFINISHED
ⓘ
Koreatown NERFINISHED ⓘ |
| servicePattern | all trains operate underground ⓘ |
| sharedSegment | Union Station – Wilshire/Vermont NERFINISHED ⓘ |
| sharesTrackageWith | B Line (Los Angeles Metro) NERFINISHED ⓘ |
| terminus |
Union Station
NERFINISHED
ⓘ
Wilshire/Western station NERFINISHED ⓘ |
| trackGauge | standard gauge ⓘ |
| transitSystem | Los Angeles Metro Rail 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: Metro Purple Line Description of subject: Metro Purple Line was the former name of Los Angeles Metro’s D Line, a heavy-rail subway route serving key destinations between downtown Los Angeles and the city’s western neighborhoods.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.