Eastside Extension corridor
E391944
The Eastside Extension corridor is a light rail transit corridor in East Los Angeles that carries Metro Rail service between downtown Los Angeles and several predominantly Latino eastside communities.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Eastside Extension corridor canonical | 1 |
| Eastside Extension of the Gold Line | 1 |
| Eastside light rail corridor | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3804324 — 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: Eastside Extension corridor Context triple: [L Line (Los Angeles Metro), servedCorridor, Eastside Extension corridor]
-
A.
Foothill Extension corridor
The Foothill Extension corridor is a segment of Los Angeles County’s light rail network that extends service eastward through the San Gabriel Valley, connecting additional suburban communities to the regional Metro Rail system.
-
B.
Red Line Northwest Extension corridor
The Red Line Northwest Extension corridor is a planned expansion route of Boston's MBTA Red Line intended to extend rapid transit service northwest from its current terminus.
-
C.
Alameda Corridor
The Alameda Corridor is a 20-mile freight rail expressway in Los Angeles County that consolidates and streamlines cargo movement between the region’s ports and the national rail network.
-
D.
Southwest Corridor
The Southwest Corridor is a major transportation and greenway corridor in Boston that combines rail lines, parks, and bike paths connecting downtown with southwestern neighborhoods.
-
E.
East-West Tollway corridor
The East-West Tollway corridor is a major suburban business and technology hub in the Chicago metropolitan area, known for its concentration of corporate headquarters, research facilities, and educational institutions along Interstate 88 in Illinois.
- 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: Eastside Extension corridor Target entity description: The Eastside Extension corridor is a light rail transit corridor in East Los Angeles that carries Metro Rail service between downtown Los Angeles and several predominantly Latino eastside communities.
-
A.
Foothill Extension corridor
The Foothill Extension corridor is a segment of Los Angeles County’s light rail network that extends service eastward through the San Gabriel Valley, connecting additional suburban communities to the regional Metro Rail system.
-
B.
Red Line Northwest Extension corridor
The Red Line Northwest Extension corridor is a planned expansion route of Boston's MBTA Red Line intended to extend rapid transit service northwest from its current terminus.
-
C.
Alameda Corridor
The Alameda Corridor is a 20-mile freight rail expressway in Los Angeles County that consolidates and streamlines cargo movement between the region’s ports and the national rail network.
-
D.
Southwest Corridor
The Southwest Corridor is a major transportation and greenway corridor in Boston that combines rail lines, parks, and bike paths connecting downtown with southwestern neighborhoods.
-
E.
East-West Tollway corridor
The East-West Tollway corridor is a major suburban business and technology hub in the Chicago metropolitan area, known for its concentration of corporate headquarters, research facilities, and educational institutions along Interstate 88 in Illinois.
- F. None of above. chosen
Statements (20)
| Predicate | Object |
|---|---|
| instanceOf |
light rail transit corridor
ⓘ
public transportation infrastructure ⓘ |
| alsoKnownAs |
Eastside Extension corridor
ⓘ
surface form:
Eastside light rail corridor
|
| carriesService | Metro Rail ⓘ |
| connects |
Downtown Los Angeles
ⓘ
surface form:
downtown Los Angeles
|
| connectsAreaType | central business district to residential neighborhoods ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| hasDemographicCharacteristicOfAreaServed | majority Latino population ⓘ |
| locatedIn |
East Los Angeles
ⓘ
Los Angeles, California, United States of America ⓘ
surface form:
Los Angeles, California
United States of America ⓘ
surface form:
United States
|
| operator | Los Angeles County Metropolitan Transportation Authority ⓘ |
| partOf |
Los Angeles Metro Rail
ⓘ
surface form:
Los Angeles Metro Rail system
|
| primaryFunction | passenger transit ⓘ |
| regionServed | Eastside of Los Angeles ⓘ |
| servesCommunities | predominantly Latino eastside communities ⓘ |
| serviceType | urban rail transit ⓘ |
| transportMode | light rail ⓘ |
| usedFor |
daily commuting
ⓘ
local travel within East 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: Eastside Extension corridor Description of subject: The Eastside Extension corridor is a light rail transit corridor in East Los Angeles that carries Metro Rail service between downtown Los Angeles and several predominantly Latino eastside communities.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
L Line (Los Angeles Metro)
this entity surface form:
Eastside Extension of the Gold Line
this entity surface form:
Eastside light rail corridor