Sun Link modern streetcar
E134148
Sun Link modern streetcar is Tucson’s electric streetcar system that provides fixed-rail public transit service through the city’s central corridors.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Sun Link modern streetcar canonical | 1 |
| Sun Link streetcar | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1125644 — 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 modern streetcar Context triple: [Tucson, hasStreetcar, Sun Link modern streetcar]
-
A.
PCC streetcar
The PCC streetcar is a standardized, streamlined electric tram design introduced in the 1930s that became one of the most widely used and influential streetcar types in North America and beyond.
-
B.
Brill streetcar
The Brill streetcar is a historic electric tramcar model built by the J.G. Brill Company, known for its early 20th-century use in urban street railway systems and preservation in heritage streetcar fleets.
-
C.
Portland Streetcar
Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
-
D.
TECO Line Streetcar System
The TECO Line Streetcar System is a heritage-style electric streetcar network serving downtown Tampa, Florida, and its surrounding districts as a public transit and tourist attraction.
-
E.
Metrocars
Metrocars are the electric multiple unit trains specifically designed and used for passenger services on the Tyne and Wear Metro system in North East England.
- 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 modern streetcar Target entity description: Sun Link modern streetcar is Tucson’s electric streetcar system that provides fixed-rail public transit service through the city’s central corridors.
-
A.
PCC streetcar
The PCC streetcar is a standardized, streamlined electric tram design introduced in the 1930s that became one of the most widely used and influential streetcar types in North America and beyond.
-
B.
Brill streetcar
The Brill streetcar is a historic electric tramcar model built by the J.G. Brill Company, known for its early 20th-century use in urban street railway systems and preservation in heritage streetcar fleets.
-
C.
Portland Streetcar
Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
-
D.
TECO Line Streetcar System
The TECO Line Streetcar System is a heritage-style electric streetcar network serving downtown Tampa, Florida, and its surrounding districts as a public transit and tourist attraction.
-
E.
Metrocars
Metrocars are the electric multiple unit trains specifically designed and used for passenger services on the Tyne and Wear Metro system in North East England.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
light rail transit
ⓘ
public transit system ⓘ streetcar system ⓘ |
| category |
Rail infrastructure in Arizona
ⓘ
Tram transport in the United States ⓘ Transport in Tucson, Arizona ⓘ |
| colorScheme | blue and silver ⓘ |
| connectsTo | Sun Tran bus network ⓘ |
| constructionStartDate | 2012-04 ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| electrification | overhead catenary ⓘ |
| fareCollection | proof-of-payment ⓘ |
| fareMedium |
mobile ticket
ⓘ
smart card ⓘ |
| fareSystem |
SunGO
ⓘ
linked to:
SunGO card
|
| fundingProgram | TIGER grant ⓘ |
| fundingSource | Federal Transit Administration ⓘ |
| locatedIn |
Tucson, Arizona
ⓘ
linked to:
Tucson
|
| numberOfLines | 1 ⓘ |
| numberOfStations | 23 ⓘ |
| numberOfVehicles | 8 ⓘ |
| openingDate | 2014-07-25 ⓘ |
| operator |
City of Tucson
ⓘ
linked to:
Tucson
Sun Tran ⓘ
linked to:
Sun Tran bus system
|
| owner |
City of Tucson
ⓘ
linked to:
Tucson
|
| primaryUse | urban transit ⓘ |
| propulsionSystem | electric ⓘ |
| region | Pima County, Arizona ⓘ |
| rightOfWay | street-running ⓘ |
| safetySystem | traffic signal priority ⓘ |
| servesArea |
Downtown Tucson
ⓘ
linked to:
Tucson
Fourth Avenue business district ⓘ Main Gate Square ⓘ Mercado District ⓘ University of Arizona ⓘ |
| servicePattern | fixed-route ⓘ |
| totalRouteLength |
3.9 miles
ⓘ
6.3 kilometers ⓘ |
| trackConfiguration | double track ⓘ |
| trackGauge | standard gauge ⓘ |
| transitType | modern streetcar ⓘ |
| vehicleManufacturer | United Streetcar ⓘ |
| vehicleType | articulated low-floor streetcar ⓘ |
| website | https://www.sunlinkstreetcar.com ⓘ |
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 modern streetcar Description of subject: Sun Link modern streetcar is Tucson’s electric streetcar system that provides fixed-rail public transit service through the city’s central corridors.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Sun Tran bus system
linked to: Sun Link modern streetcar