Narita Airport Line (Keisei)
E871070
The Narita Airport Line (Keisei) is a Japanese railway line operated by Keisei Electric Railway that provides rapid rail access between central Tokyo and Narita International Airport.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Keisei Narita Airport Line | 1 |
| Keisei Narita Sky Access Line | 1 |
| Narita Airport Line (Keisei) canonical | 1 |
| Narita Sky Access Line | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8363236 — 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: Narita Airport Line (Keisei) Context triple: [Narita Airport Terminal 1 Station, railwayLine, Narita Airport Line (Keisei)]
-
A.
Keikyū Airport Line
The Keikyū Airport Line is a railway line in the Tokyo area that provides direct train access between central Tokyo and Haneda Airport.
-
B.
Narita Line (urban section)
Narita Line (urban section) is a commuter rail line in the Greater Tokyo area operated by JR East, connecting central Chiba with Narita and serving as part of the region’s urban rail network.
-
C.
Keio Sagamihara Line
The Keio Sagamihara Line is a commuter railway line in the Tokyo metropolitan area operated by Keio Corporation, connecting suburban communities with central Tokyo.
-
D.
Keio Dōbutsuen Line
The Keio Dōbutsuen Line is a short branch railway line in Hino, Tokyo, operated by Keio Corporation, primarily serving visitors to the Tama Zoo and nearby attractions.
-
E.
Musashino Line
The Musashino Line is a major JR East commuter rail line in the Greater Tokyo area that forms an orbital route through the suburbs, connecting key residential and commercial districts.
- 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: Narita Airport Line (Keisei) Target entity description: The Narita Airport Line (Keisei) is a Japanese railway line operated by Keisei Electric Railway that provides rapid rail access between central Tokyo and Narita International Airport.
-
A.
Keikyū Airport Line
The Keikyū Airport Line is a railway line in the Tokyo area that provides direct train access between central Tokyo and Haneda Airport.
-
B.
Narita Line (urban section)
Narita Line (urban section) is a commuter rail line in the Greater Tokyo area operated by JR East, connecting central Chiba with Narita and serving as part of the region’s urban rail network.
-
C.
Keio Sagamihara Line
The Keio Sagamihara Line is a commuter railway line in the Tokyo metropolitan area operated by Keio Corporation, connecting suburban communities with central Tokyo.
-
D.
Keio Dōbutsuen Line
The Keio Dōbutsuen Line is a short branch railway line in Hino, Tokyo, operated by Keio Corporation, primarily serving visitors to the Tama Zoo and nearby attractions.
-
E.
Musashino Line
The Musashino Line is a major JR East commuter rail line in the Greater Tokyo area that forms an orbital route through the suburbs, connecting key residential and commercial districts.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail line
ⓘ
railway line ⓘ |
| connectsCity | Tokyo NERFINISHED ⓘ |
| connectsPrefecture | Chiba Prefecture NERFINISHED ⓘ |
| connectsTo |
Narita International Airport
NERFINISHED
ⓘ
central Tokyo ⓘ |
| country | Japan ⓘ |
| electrification | overhead catenary ⓘ |
| gauge | standard gauge ⓘ |
| hasService |
express services
ⓘ
limited-stop services ⓘ |
| locatedIn |
Chiba Prefecture
NERFINISHED
ⓘ
Tokyo Metropolis NERFINISHED ⓘ |
| operator | Keisei Electric Railway NERFINISHED ⓘ |
| owner | Keisei Electric Railway NERFINISHED ⓘ |
| partOf | Tokyo airport rail links NERFINISHED ⓘ |
| primaryPurpose | airport access ⓘ |
| railwaySystem | Keisei network NERFINISHED ⓘ |
| regionServed | Greater Tokyo Area NERFINISHED ⓘ |
| servesAirport | Narita International Airport NERFINISHED ⓘ |
| serviceType | rapid rail access ⓘ |
| terminus |
Narita International Airport
NERFINISHED
ⓘ
central Tokyo NERFINISHED ⓘ |
| transportMode | rail ⓘ |
| usedFor | passenger transport ⓘ |
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: Narita Airport Line (Keisei) Description of subject: The Narita Airport Line (Keisei) is a Japanese railway line operated by Keisei Electric Railway that provides rapid rail access between central Tokyo and Narita International Airport.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Keisei Narita Airport Line
this entity surface form:
Narita Sky Access Line
this entity surface form:
Keisei Narita Sky Access Line