L Line (Los Angeles Metro)
E210510
The L Line was a light rail route in the Los Angeles Metro Rail system that connected East Los Angeles and the San Gabriel Valley to downtown and northeast Los Angeles before being restructured into other lines.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Los Angeles Metro L Line | 6 |
| L Line (Los Angeles Metro) canonical | 3 |
| LA Metro L Line (at Union Station) | 1 |
| Metro L Line (Los Angeles Metro Rail) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1756120 — 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: L Line (Los Angeles Metro) Context triple: [Metro Rail (Los Angeles), formerLine, L Line (Los Angeles Metro)]
-
A.
K Line (Los Angeles Metro)
The K Line is a light rail route in the Los Angeles Metro Rail system serving neighborhoods in South Los Angeles and connecting to major transit hubs.
-
B.
LA Metro A Line
The LA Metro A Line is a light rail line in Los Angeles County that connects downtown Los Angeles with several surrounding communities, including Pasadena and Long Beach.
-
C.
Los Angeles Metro Rail
Los Angeles Metro Rail is a rapid transit system serving Los Angeles County, California, consisting of multiple light rail and subway lines that connect key neighborhoods, business districts, and regional destinations.
-
D.
Metro J Line
The Metro J Line is a bus rapid transit service in Los Angeles County that provides high-frequency, limited-stop connections along key north-south and east-west corridors.
-
E.
D Line (Los Angeles Metro)
The D Line is a heavy-rail subway route in the Los Angeles Metro system that runs primarily beneath Wilshire Boulevard, connecting downtown Los Angeles with the city’s westside.
- 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: L Line (Los Angeles Metro) Target entity description: The L Line was a light rail route in the Los Angeles Metro Rail system that connected East Los Angeles and the San Gabriel Valley to downtown and northeast Los Angeles before being restructured into other lines.
-
A.
K Line (Los Angeles Metro)
The K Line is a light rail route in the Los Angeles Metro Rail system serving neighborhoods in South Los Angeles and connecting to major transit hubs.
-
B.
LA Metro A Line
The LA Metro A Line is a light rail line in Los Angeles County that connects downtown Los Angeles with several surrounding communities, including Pasadena and Long Beach.
-
C.
Los Angeles Metro Rail
Los Angeles Metro Rail is a rapid transit system serving Los Angeles County, California, consisting of multiple light rail and subway lines that connect key neighborhoods, business districts, and regional destinations.
-
D.
Metro J Line
The Metro J Line is a bus rapid transit service in Los Angeles County that provides high-frequency, limited-stop connections along key north-south and east-west corridors.
-
E.
D Line (Los Angeles Metro)
The D Line is a heavy-rail subway route in the Los Angeles Metro system that runs primarily beneath Wilshire Boulevard, connecting downtown Los Angeles with the city’s westside.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
former Los Angeles Metro Rail line
ⓘ
light rail line ⓘ |
| colorOnSystemMap | gold ⓘ |
| connectsWith |
A Line at 7th Street/Metro Center
ⓘ
surface form:
A Line at Union Station (before restructuring)
B Line (Los Angeles Metro) ⓘ
surface form:
B Line at Union Station (before restructuring)
D Line (Denver light rail) ⓘ
surface form:
D Line at Union Station (before restructuring)
E Line (Los Angeles Metro) ⓘ
surface form:
E Line at Little Tokyo/Arts District (after Regional Connector)
|
| country |
United States of America
ⓘ
surface form:
United States
|
| electrification | 750 V DC overhead catenary ⓘ |
| fareSystem | TAP card-based fare collection ⓘ |
| formerName | Gold Line ⓘ |
| gauge | standard gauge ⓘ |
| lineLength | approximately 31 miles ⓘ |
| locatedIn |
Los Angeles County
ⓘ
surface form:
Los Angeles County, California
|
| notableStructure |
Pasadena Freeway
ⓘ
surface form:
Pasadena Freeway (SR 110) crossing near Arroyo Seco
median running in Interstate 210 in Pasadena and Arcadia ⓘ |
| numberOfStations | 27 ⓘ |
| opened | July 26, 2003 ⓘ |
| openedSegment |
Eastside Extension to Atlantic opened November 15, 2009
ⓘ
Foothill Extension to APU/Citrus College opened March 5, 2016 ⓘ Union Station–Sierra Madre Villa segment opened July 26, 2003 ⓘ |
| operator | Los Angeles County Metropolitan Transportation Authority ⓘ |
| ownedBy | Los Angeles County Metropolitan Transportation Authority ⓘ |
| reasonForRestructuring | completion of the Regional Connector Transit Project ⓘ |
| regionServed |
San Gabriel Valley
ⓘ
surface form:
San Gabriel Valley corridor
|
| restructuredInto |
A Line (Los Angeles Metro)
ⓘ
E Line (Los Angeles Metro) ⓘ |
| rightOfWay | mixture of at-grade, elevated, and freeway-median segments ⓘ |
| rollingStock |
Kinkisharyo light rail vehicles
ⓘ
surface form:
Kinki Sharyo P3010 light rail vehicles
Siemens P2000 light rail vehicles ⓘ |
| servedNeighborhood |
Azusa
ⓘ
Boyle Heights ⓘ East Los Angeles ⓘ
surface form:
East Los Angeles (unincorporated)
Highland Park ⓘ Little Tokyo, Los Angeles ⓘ
surface form:
Little Tokyo
Pasadena ⓘ |
| serviceArea |
East Los Angeles
ⓘ
San Gabriel Valley ⓘ Downtown Los Angeles ⓘ
surface form:
downtown Los Angeles
Northeast Los Angeles ⓘ
surface form:
northeast Los Angeles
|
| serviceEnded | June 16, 2023 ⓘ |
| status | discontinued as a separate line designation ⓘ |
| system | Los Angeles Metro Rail ⓘ |
| terminus |
APU/Citrus College station
ⓘ
Atlantic station ⓘ Union Station ⓘ
surface form:
Union Station (historical core segment)
|
| trackConfiguration | mostly double track ⓘ |
| transitType | light rail ⓘ |
| usesInfrastructure | Regional Connector tunnel in downtown Los Angeles ⓘ |
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: L Line (Los Angeles Metro) Description of subject: The L Line was a light rail route in the Los Angeles Metro Rail system that connected East Los Angeles and the San Gabriel Valley to downtown and northeast Los Angeles before being restructured into other lines.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Metro Rail (Los Angeles)
this entity surface form:
Los Angeles Metro L Line
this entity surface form:
Los Angeles Metro L Line
this entity surface form:
LA Metro L Line (at Union Station)
this entity surface form:
Los Angeles Metro L Line
this entity surface form:
Los Angeles Metro L Line
subject surface form:
1st Street (Los Angeles)
this entity surface form:
Metro L Line (Los Angeles Metro Rail)
this entity surface form:
Los Angeles Metro L Line
this entity surface form:
Los Angeles Metro L Line