A Line
E670208
A Line is a commuter rail service in the Denver metropolitan area that connects downtown Denver with Denver International Airport.
All labels observed (1)
| Label | Occurrences |
|---|---|
| A Line canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T7509078 — 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: A Line Context triple: [Denver RTD, operates, A Line]
-
A.
A Line
The A Line is a light rail service in the Los Angeles Metro Rail system that runs between Azusa and Long Beach, serving key destinations across Los Angeles County.
-
B.
On the Line
On the Line is a critically acclaimed 2019 solo album by American singer-songwriter Jenny Lewis, blending indie rock and retro pop influences with introspective, emotionally rich lyrics.
-
C.
On the Line
"On the Line" is a 2001 romantic comedy film best known for starring members of the boy band *NSYNC, including Lance Bass and Joey Fatone.
-
D.
Black Lines
Black Lines is an abstract painting by Wassily Kandinsky that exemplifies his pioneering use of bold linear forms and vibrant color to explore non-representational expression.
-
E.
Continuing the Line
"Continuing the Line" is an episode of the natural history television series "The Trials of Life," focusing on the reproductive strategies and behaviors animals use to ensure the survival of their offspring.
- 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: A Line Target entity description: A Line is a commuter rail service in the Denver metropolitan area that connects downtown Denver with Denver International Airport.
-
A.
A Line
The A Line is a light rail service in the Los Angeles Metro Rail system that runs between Azusa and Long Beach, serving key destinations across Los Angeles County.
-
B.
On the Line
"On the Line" is a 2001 romantic comedy film best known for starring members of the boy band *NSYNC, including Lance Bass and Joey Fatone.
-
C.
On the Line
On the Line is a critically acclaimed 2019 solo album by American singer-songwriter Jenny Lewis, blending indie rock and retro pop influences with introspective, emotionally rich lyrics.
-
D.
Black Lines
Black Lines is an abstract painting by Wassily Kandinsky that exemplifies his pioneering use of bold linear forms and vibrant color to explore non-representational expression.
-
E.
Continuing the Line
"Continuing the Line" is an episode of the natural history television series "The Trials of Life," focusing on the reproductive strategies and behaviors animals use to ensure the survival of their offspring.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail service
ⓘ
passenger rail line ⓘ |
| colorOnSystemMap | light blue ⓘ |
| connects |
Denver International Airport
NERFINISHED
ⓘ
downtown Denver NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| electrification | 25 kV AC overhead catenary ⓘ |
| endStation | Denver International Airport Station NERFINISHED ⓘ |
| fareSystem | RTD fare system ⓘ |
| hasMode | rail ⓘ |
| locatedIn | Denver metropolitan area NERFINISHED ⓘ |
| openingDate | 2016-04-22 ⓘ |
| operator |
Denver Transit Partners
NERFINISHED
ⓘ
Regional Transportation District NERFINISHED ⓘ |
| owner | Regional Transportation District NERFINISHED ⓘ |
| partOf |
FasTracks program
NERFINISHED
ⓘ
RTD commuter rail system NERFINISHED ⓘ |
| previousName | East Rail Line NERFINISHED ⓘ |
| primaryPurpose |
airport access
ⓘ
regional commuter transport ⓘ |
| regionServed |
Adams County, Colorado
NERFINISHED
ⓘ
City and County of Denver NERFINISHED ⓘ |
| rollingStock | Hyundai Rotem electric multiple units NERFINISHED ⓘ |
| serves | Denver International Airport NERFINISHED ⓘ |
| serviceType |
airport express
ⓘ
commuter rail ⓘ |
| startStation | Denver Union Station NERFINISHED ⓘ |
| terminus |
Denver International Airport Station
NERFINISHED
ⓘ
Denver Union Station NERFINISHED ⓘ |
| trackGauge | standard gauge ⓘ |
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: A Line Description of subject: A Line is a commuter rail service in the Denver metropolitan area that connects downtown Denver with Denver International Airport.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Regional Transportation District