Sound Transit Link light rail
E9533
Sound Transit Link light rail is a regional rapid transit system serving Seattle and surrounding communities with frequent, high-capacity train service.
All labels observed (8)
How this entity was disambiguated
This entity first appeared as the object of triple T81689 — 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: Sound Transit Link light rail Context triple: [Seattle, transportationSystem, Sound Transit Link light rail]
-
A.
TriMet
TriMet is the regional public transportation agency serving the Portland, Oregon metropolitan area, operating buses, light rail, and commuter rail services.
-
B.
Portland Bureau of Transportation
The Portland Bureau of Transportation is the city agency responsible for planning, building, managing, and maintaining Portland, Oregon’s transportation infrastructure and services.
-
C.
C-TRAN
C-TRAN is the public transit agency serving Clark County and the Vancouver, Washington area, providing bus and express services often coordinated with Portland’s TriMet system.
-
D.
Portland Streetcar
Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
-
E.
Baltimore Light RailLink
Baltimore Light RailLink is a light rail transit system serving the Baltimore metropolitan area, connecting key locations including downtown Baltimore and Baltimore/Washington International Thurgood Marshall Airport.
- 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: Sound Transit Link light rail Target entity description: Sound Transit Link light rail is a regional rapid transit system serving Seattle and surrounding communities with frequent, high-capacity train service.
-
A.
TriMet
TriMet is the regional public transportation agency serving the Portland, Oregon metropolitan area, operating buses, light rail, and commuter rail services.
-
B.
Portland Bureau of Transportation
The Portland Bureau of Transportation is the city agency responsible for planning, building, managing, and maintaining Portland, Oregon’s transportation infrastructure and services.
-
C.
C-TRAN
C-TRAN is the public transit agency serving Clark County and the Vancouver, Washington area, providing bus and express services often coordinated with Portland’s TriMet system.
-
D.
Portland Streetcar
Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
-
E.
Baltimore Light RailLink
Baltimore Light RailLink is a light rail transit system serving the Baltimore metropolitan area, connecting key locations including downtown Baltimore and Baltimore/Washington International Thurgood Marshall Airport.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
light rail system
ⓘ
public transportation system ⓘ rapid transit system ⓘ |
| brandName | Link light rail ⓘ |
| connectsTo |
Angle Lake
ⓘ
Beacon Hill ⓘ Bellevue (via 2 Line) ⓘ Capitol Hill ⓘ downtown Seattle ⓘ
surface form:
Downtown Seattle
Northgate ⓘ Rainier Valley ⓘ Redmond (via 2 Line) ⓘ SeaTac ⓘ Seattle–Tacoma International Airport ⓘ SoDo ⓘ Tukwila ⓘ University of Washington ⓘ |
| country | United States of America ⓘ |
| electrification | overhead catenary ⓘ |
| farePolicy | distance-based fares ⓘ |
| fareSystem | ORCA card ⓘ |
| hasPart |
1 Line
ⓘ
2 Line ⓘ T Line ⓘ |
| hasSection |
at-grade track
ⓘ
elevated track ⓘ tunnel track ⓘ |
| inception | 2009 ⓘ |
| openingDate | 2009-07-18 ⓘ |
| operator | Sound Transit ⓘ |
| owner |
Sound Transit
ⓘ
surface form:
Central Puget Sound Regional Transit Authority
|
| partOf |
Sound Transit
ⓘ
surface form:
Sound Transit regional transit system
|
| planningProgram |
Sound Transit
ⓘ
surface form:
Sound Transit 2
Sound Transit ⓘ
surface form:
Sound Transit 3
|
| powerSupply | 1500 V DC ⓘ |
| primaryCityServed |
Seattle, Washington, United States
ⓘ
surface form:
Seattle, Washington
|
| primaryMode | grade-separated rail ⓘ |
| purpose | regional rapid transit for Central Puget Sound ⓘ |
| rollingStock |
Kinkisharyo light rail vehicles
ⓘ
Siemens S700 light rail vehicles ⓘ |
| serves |
King County
ⓘ
surface form:
King County, Washington
Pierce County ⓘ
surface form:
Pierce County, Washington
Seattle, Washington, United States ⓘ
surface form:
Seattle
Snohomish County ⓘ
surface form:
Snohomish County, Washington
|
| serviceFrequency | frequent all-day service ⓘ |
| serviceType | high-capacity transit ⓘ |
| state | Washington ⓘ |
| trackGauge | standard gauge ⓘ |
| transitType | light rail ⓘ |
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: Sound Transit Link light rail Description of subject: Sound Transit Link light rail is a regional rapid transit system serving Seattle and surrounding communities with frequent, high-capacity train service.
Referenced by (25)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Seattle
this entity surface form:
Link light rail at Seattle–Tacoma International Airport
this entity surface form:
Seattle Link light rail
this entity surface form:
Sound Transit Link light rail stations
International District/Chinatown Station (Link light rail)
→
partOf
→
Sound Transit Link light rail
ⓘ
subject surface form:
International District/Chinatown Station
this entity surface form:
Sound Transit Link light rail network
this entity surface form:
Sound Transit Link light rail system
this entity surface form:
Sound Transit Link light rail lines
this entity surface form:
Sound Transit Link system
this entity surface form:
Sound Transit Link light rail system
this entity surface form:
Sound Transit Link system
this entity surface form:
Sound Transit Link light rail system
this entity surface form:
Sound Transit Link light rail system
this entity surface form:
Sound Transit Link light rail system
this entity surface form:
Sound Transit Link light rail system
this entity surface form:
Sound Transit Link system
this entity surface form:
Sound Transit Link system
this entity surface form:
Sound Transit Link light rail system
this entity surface form:
Sound Transit Link light rail system