Sun Link
E546458
Sun Link is a modern streetcar system serving downtown Tucson, Arizona, and nearby districts as part of the city’s public transit network.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sun Link canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T5793065 — 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: Sun Link Context triple: [Sun Tran, hasSubsidiaryService, Sun Link]
-
A.
Skylink
Skylink is an automated people mover system that transports passengers between terminals at Dallas/Fort Worth International Airport.
-
B.
SmartLink
SmartLink is a contactless fare payment card used for accessing PATH train services in the New York–New Jersey metropolitan area.
-
C.
Link 2 Line
Link 2 Line is a light rail service in the Seattle metropolitan area that connects key neighborhoods and suburbs as part of the Sound Transit Link system.
-
D.
Trans Link Systems
Trans Link Systems is the Dutch company responsible for developing and managing the nationwide OV-chipkaart public transport payment system in the Netherlands.
-
E.
Central Link
Central Link was the original name for Seattle’s first light rail line, now part of the city’s Link light rail system.
- 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: Sun Link Target entity description: Sun Link is a modern streetcar system serving downtown Tucson, Arizona, and nearby districts as part of the city’s public transit network.
-
A.
Skylink
Skylink is an automated people mover system that transports passengers between terminals at Dallas/Fort Worth International Airport.
-
B.
SmartLink
SmartLink is a contactless fare payment card used for accessing PATH train services in the New York–New Jersey metropolitan area.
-
C.
Link 2 Line
Link 2 Line is a light rail service in the Seattle metropolitan area that connects key neighborhoods and suburbs as part of the Sound Transit Link system.
-
D.
Trans Link Systems
Trans Link Systems is the Dutch company responsible for developing and managing the nationwide OV-chipkaart public transport payment system in the Netherlands.
-
E.
Central Link
Central Link was the original name for Seattle’s first light rail line, now part of the city’s Link light rail system.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
light rail transit
ⓘ
public transportation system ⓘ streetcar system ⓘ |
| connects |
Downtown Tucson core
ⓘ
Fourth Avenue Business District ⓘ
linked to:
Fourth Avenue business district
Main Gate Square ⓘ Mercado San Agustin area ⓘ Rio Nuevo redevelopment area ⓘ University of Arizona ⓘ |
| country | United States of America ⓘ |
| electrification | overhead catenary ⓘ |
| fareCollection | on-board validators ⓘ |
| fareMedia | passes shared with Sun Tran bus system ⓘ |
| fareSystem |
integrated with Sun Tran
ⓘ
integrated with Sun Van ⓘ |
| hasAccessibility |
ADA-compliant boarding
ⓘ
low-floor vehicles ⓘ |
| hasColor |
blue
ⓘ
green ⓘ silver ⓘ |
| inception | 2014 ⓘ |
| lineLength | 3.9 miles ⓘ |
| locatedIn |
Tucson, Arizona
ⓘ
linked to:
Tucson
|
| numberOfLines | 1 ⓘ |
| numberOfStations | 23 ⓘ |
| numberOfVehicles | 8 ⓘ |
| openingDate | July 25, 2014 ⓘ |
| operator |
City of Tucson
ⓘ
linked to:
Tucson
Sun Tran ⓘ
linked to:
Sun Tran bus system
|
| owner |
City of Tucson
ⓘ
linked to:
Tucson
|
| partOf |
Sun Tran family of services
ⓘ
linked to:
Sun Tran bus system
Tucson public transit network ⓘ |
| primaryPurpose |
support downtown economic development
ⓘ
urban circulation ⓘ |
| propulsionSystem | electric ⓘ |
| regionServed | Pima County, Arizona ⓘ |
| rollingStock | United Streetcar 100-series vehicles ⓘ |
| routeConfiguration | end-to-end single corridor ⓘ |
| safetySystem | traffic-signal priority at intersections ⓘ |
| serves |
Fourth Avenue district
ⓘ
linked to:
Fourth Avenue business district
Mercado District ⓘ University of Arizona area ⓘ
linked to:
University of Arizona
downtown Tucson ⓘ mixed-use urban corridors ⓘ |
| systemType | modern streetcar ⓘ |
| trackGauge | standard gauge ⓘ |
| transitMode | rail-based transit ⓘ |
| website | https://www.suntran.com/routes-services/sun-link ⓘ |
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: Sun Link Description of subject: Sun Link is a modern streetcar system serving downtown Tucson, Arizona, and nearby districts as part of the city’s public transit network.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Sun Tran bus system