Third Street Light Rail Project Phase 2
E73822
Third Street Light Rail Project Phase 2 is a San Francisco Municipal Railway expansion phase that includes the Central Subway to extend light rail service through downtown and Chinatown.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Third Street Light Rail Project | 2 |
| Third Street Light Rail Project Phase 2 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T589780 — 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: Third Street Light Rail Project Phase 2 Context triple: [Central Subway, partOfProject, Third Street Light Rail Project Phase 2]
-
A.
DART Light Rail
DART Light Rail is a light rail transit system serving the Dallas–Fort Worth metropolitan area, operated by Dallas Area Rapid Transit.
-
B.
MAX Light Rail
MAX Light Rail is the metropolitan light rail transit system serving the Portland, Oregon, metropolitan area.
-
C.
METRO light rail
METRO light rail is a rapid transit system serving the Minneapolis–Saint Paul metropolitan area with multiple color-designated lines connecting key urban, suburban, and airport destinations.
-
D.
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.
-
E.
Newark Light Rail
Newark Light Rail is a light rail transit system serving the city of Newark, New Jersey, connecting downtown, residential neighborhoods, and key regional transit hubs.
- 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: Third Street Light Rail Project Phase 2 Target entity description: Third Street Light Rail Project Phase 2 is a San Francisco Municipal Railway expansion phase that includes the Central Subway to extend light rail service through downtown and Chinatown.
-
A.
DART Light Rail
DART Light Rail is a light rail transit system serving the Dallas–Fort Worth metropolitan area, operated by Dallas Area Rapid Transit.
-
B.
MAX Light Rail
MAX Light Rail is the metropolitan light rail transit system serving the Portland, Oregon, metropolitan area.
-
C.
METRO light rail
METRO light rail is a rapid transit system serving the Minneapolis–Saint Paul metropolitan area with multiple color-designated lines connecting key urban, suburban, and airport destinations.
-
D.
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.
-
E.
Newark Light Rail
Newark Light Rail is a light rail transit system serving the city of Newark, New Jersey, connecting downtown, residential neighborhoods, and key regional transit hubs.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
light rail expansion project
ⓘ
public transportation infrastructure project ⓘ |
| connectsArea |
Chinatown
ⓘ
South of Market (SoMa) ⓘ
surface form:
South of Market
Union Square ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| goal |
improve transit access to Chinatown
ⓘ
improve transit connectivity in downtown San Francisco ⓘ |
| includes | Central Subway ⓘ |
| includesComponent |
subway tunnel
ⓘ
underground stations ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
San Francisco ⓘ |
| mode | underground light rail ⓘ |
| operator |
San Francisco Muni
ⓘ
surface form:
San Francisco Municipal Railway
San Francisco Municipal Transportation Agency ⓘ |
| partOf |
Third Street Light Rail Project Phase 2
self-linksurface differs
ⓘ
surface form:
Third Street Light Rail Project
|
| projectPhase | Phase 2 ⓘ |
| purpose |
extend light rail service through downtown San Francisco
ⓘ
extend light rail service to Chinatown ⓘ |
| railSystem |
San Francisco Muni
ⓘ
surface form:
Muni Metro
|
| relatedLine | T Third Street line ⓘ |
| serviceType | light rail transit ⓘ |
| transitAgency |
San Francisco Muni
ⓘ
surface form:
San Francisco Municipal Railway
San Francisco Municipal Transportation Agency ⓘ |
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: Third Street Light Rail Project Phase 2 Description of subject: Third Street Light Rail Project Phase 2 is a San Francisco Municipal Railway expansion phase that includes the Central Subway to extend light rail service through downtown and Chinatown.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
Third Street Light Rail Project Phase 2
→
partOf
→
Third Street Light Rail Project Phase 2
self-linksurface differs
ⓘ
this entity surface form:
Third Street Light Rail Project
this entity surface form:
Third Street Light Rail Project