FasTracks rail lines
E670207
FasTracks rail lines are a network of commuter and light rail transit corridors in the Denver metropolitan area developed to expand regional public transportation and improve connectivity.
All labels observed (9)
| Label | Occurrences |
|---|---|
| FasTracks program | 8 |
| FasTracks West Corridor | 2 |
| Denver metropolitan rail network | 1 |
| FasTracks | 1 |
| FasTracks expansion program | 1 |
| FasTracks lines | 1 |
| FasTracks rail lines canonical | 1 |
| FasTracks transit expansion in Denver region | 1 |
| RTD FasTracks program | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7509077 — 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: FasTracks rail lines Context triple: [Denver RTD, operates, FasTracks rail lines]
-
A.
L Line (Denver light rail)
The L Line is a light rail service in Denver, Colorado, that runs through the city’s central and northeastern neighborhoods as part of the Denver RTD rail network.
-
B.
R Line (Denver light rail)
The R Line is a light rail service in the Denver metropolitan area that runs primarily through Aurora, Colorado, connecting key suburbs, employment centers, and transfer points within the Regional Transportation District network.
-
C.
E Line (Denver light rail)
The E Line is a light rail service in the Denver metropolitan area that connects downtown Denver with southern suburbs as part of the region’s RTD rail network.
-
D.
TRAX light rail
TRAX light rail is a public transit light rail system in the Salt Lake City metropolitan area of Utah, operated by the Utah Transit Authority.
-
E.
H Line (Denver light rail)
The H Line is a light rail service in the Denver metropolitan area that connects downtown Denver with southeastern suburbs as part of the region’s RTD rail network.
- 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: FasTracks rail lines Target entity description: FasTracks rail lines are a network of commuter and light rail transit corridors in the Denver metropolitan area developed to expand regional public transportation and improve connectivity.
-
A.
L Line (Denver light rail)
The L Line is a light rail service in Denver, Colorado, that runs through the city’s central and northeastern neighborhoods as part of the Denver RTD rail network.
-
B.
R Line (Denver light rail)
The R Line is a light rail service in the Denver metropolitan area that runs primarily through Aurora, Colorado, connecting key suburbs, employment centers, and transfer points within the Regional Transportation District network.
-
C.
E Line (Denver light rail)
The E Line is a light rail service in the Denver metropolitan area that connects downtown Denver with southern suburbs as part of the region’s RTD rail network.
-
D.
TRAX light rail
TRAX light rail is a public transit light rail system in the Salt Lake City metropolitan area of Utah, operated by the Utah Transit Authority.
-
E.
H Line (Denver light rail)
The H Line is a light rail service in the Denver metropolitan area that connects downtown Denver with southeastern suburbs as part of the region’s RTD rail network.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
public transportation infrastructure
ⓘ
rail transit network ⓘ |
| beneficiary |
commuters in Denver metropolitan area
ⓘ
regional travelers in Front Range urban corridor ⓘ |
| component |
A Line
ⓘ
B Line ⓘ E Line extensions ⓘ F Line extensions ⓘ G Line ⓘ H Line extensions ⓘ
linked to:
H Line
L Line connection elements ⓘ N Line ⓘ R Line ⓘ W Line ⓘ |
| connectsTo |
Denver International Airport
ⓘ
Denver Union Station ⓘ
linked to:
Union Station (Denver)
regional bus network ⓘ suburban park-and-ride facilities ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| developedBy | Regional Transportation District ⓘ |
| feature |
dedicated rail corridors
ⓘ
intermodal transfer stations ⓘ park-and-ride stations ⓘ |
| fundingModel | sales tax increase approved by voters ⓘ |
| goal |
reduce traffic congestion
ⓘ
support transit-oriented development ⓘ |
| inception | mid-2000s ⓘ |
| locatedIn |
Colorado
ⓘ
Denver metropolitan area ⓘ
linked to:
Denver–Aurora–Lakewood metropolitan area
|
| mode |
commuter rail
ⓘ
light rail ⓘ |
| operator |
RTD
ⓘ
Regional Transportation District ⓘ |
| partOf |
FasTracks program
ⓘ
linked to:
FasTracks rail lines
|
| partOfTransportSystem |
Denver RTD rail system
ⓘ
linked to:
Denver RTD
|
| planningAuthority | RTD Board of Directors ⓘ |
| purpose |
expand regional public transportation
ⓘ
improve connectivity in Denver metropolitan area ⓘ |
| regionServed |
Adams County, Colorado
ⓘ
Arapahoe County, Colorado ⓘ City and County of Denver ⓘ
linked to:
Denver County, Colorado
Douglas County, Colorado ⓘ Jefferson County, Colorado ⓘ |
| relatedProject | Union Station redevelopment ⓘ |
| technology |
electric multiple unit commuter rail
ⓘ
light rail vehicles ⓘ |
| voterApprovalYear | 2004 ⓘ |
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: FasTracks rail lines Description of subject: FasTracks rail lines are a network of commuter and light rail transit corridors in the Denver metropolitan area developed to expand regional public transportation and improve connectivity.
Referenced by (17)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: FasTracks rail lines
subject linked to:
RTD
linked to: FasTracks rail lines
linked to: FasTracks rail lines
N Line (Denver commuter rail)
→
isPartOfTransitExpansion
→
FasTracks transit expansion in Denver region
ⓘ
linked to: FasTracks rail lines
linked to: FasTracks rail lines
linked to: FasTracks rail lines
linked to: FasTracks rail lines
subject linked to:
A Line
linked to: FasTracks rail lines
subject linked to:
G Line
linked to: FasTracks rail lines
linked to: FasTracks rail lines
linked to: FasTracks rail lines
linked to: FasTracks rail lines
linked to: FasTracks rail lines
linked to: FasTracks rail lines
linked to: FasTracks rail lines
linked to: FasTracks rail lines