Arrow line
E739506
Arrow line is a commuter rail service in California’s Inland Empire that connects San Bernardino and Redlands as part of the regional Arrow (San Bernardino–Redlands) transit corridor.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Arrow Line | 1 |
| Arrow line canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8508338 — 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: Arrow line Context triple: [Arrow (San Bernardino–Redlands) service, alsoKnownAs, Arrow line]
-
A.
A line
The A line is a major New York City Subway service that runs primarily along the Eighth Avenue Line in Manhattan and extends into Brooklyn and Queens.
-
B.
Line L
Line L is a cable car line of the Medellín Metro system that serves hillside neighborhoods by connecting them to the main urban transit network.
-
C.
Line P
Line P is a cable car line of the Medellín Metro system that serves hillside neighborhoods by connecting them to the city’s main mass transit network.
-
D.
Mitre Line
The Mitre Line is a major commuter rail service in the Buenos Aires metropolitan area that links the city center with several northern suburbs.
-
E.
Z line
The Z line is a rush-hour skip-stop service on the New York City Subway’s J/Z route, running along the BMT Jamaica Line between Queens and Manhattan.
- 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: Arrow line Target entity description: Arrow line is a commuter rail service in California’s Inland Empire that connects San Bernardino and Redlands as part of the regional Arrow (San Bernardino–Redlands) transit corridor.
-
A.
A line
The A line is a major New York City Subway service that runs primarily along the Eighth Avenue Line in Manhattan and extends into Brooklyn and Queens.
-
B.
Line L
Line L is a cable car line of the Medellín Metro system that serves hillside neighborhoods by connecting them to the main urban transit network.
-
C.
Line P
Line P is a cable car line of the Medellín Metro system that serves hillside neighborhoods by connecting them to the city’s main mass transit network.
-
D.
Mitre Line
The Mitre Line is a major commuter rail service in the Buenos Aires metropolitan area that links the city center with several northern suburbs.
-
E.
Z line
The Z line is a rush-hour skip-stop service on the New York City Subway’s J/Z route, running along the BMT Jamaica Line between Queens and Manhattan.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail service
ⓘ
passenger rail line ⓘ |
| alsoKnownAs |
Arrow
ⓘ
San Bernardino–Redlands Arrow line ⓘ
linked to:
Arrow (San Bernardino–Redlands) line
|
| category |
Commuter rail in the United States
ⓘ
linked to:
North American commuter railroads
Rail transport in California ⓘ |
| connects |
Redlands
ⓘ
San Bernardino ⓘ |
| connectsWith |
Metrolink San Bernardino Line
ⓘ
Omnitrans bus network ⓘ
linked to:
Omnitrans
|
| country |
United States
ⓘ
linked to:
United States of America
|
| electrification | non-electrified ⓘ |
| fareSystem | Metrolink fare system ⓘ |
| locatedIn |
Inland Empire
ⓘ
San Bernardino County, California ⓘ
linked to:
San Bernardino County
|
| operator |
Metrolink
ⓘ
linked to:
Metrolink (Southern California)
Southern California Regional Rail Authority ⓘ |
| owner | San Bernardino County Transportation Authority ⓘ |
| partOf |
Arrow (San Bernardino–Redlands) transit corridor
ⓘ
linked to:
Arrow (San Bernardino–Redlands) line
|
| propulsion | diesel multiple unit ⓘ |
| purpose |
regional commuter connectivity
ⓘ
transit corridor development in San Bernardino County ⓘ |
| railGauge | standard gauge ⓘ |
| regionServed |
California’s Inland Empire
ⓘ
linked to:
Inland Empire, California
Redlands ⓘ San Bernardino ⓘ |
| servicePattern | all-stops local service ⓘ |
| serviceType | commuter rail ⓘ |
| state |
California
ⓘ
linked to:
California, United States
|
| terminus |
San Bernardino Transit Center
ⓘ
University of Redlands ⓘ |
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: Arrow line Description of subject: Arrow line is a commuter rail service in California’s Inland Empire that connects San Bernardino and Redlands as part of the regional Arrow (San Bernardino–Redlands) transit corridor.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Arrow line