Tama Toshi Monorail Co., Ltd.
E721181
Tama Toshi Monorail Co., Ltd. is a Japanese transportation company that owns and operates the Tama Toshi Monorail Line serving the Tama area of western Tokyo.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Tama Toshi Monorail Co., Ltd. canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T8257225 — 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: Tama Toshi Monorail Co., Ltd. Context triple: [Tama Monorail, operator, Tama Toshi Monorail Co., Ltd.]
-
A.
Tokyo Monorail Co., Ltd.
Tokyo Monorail Co., Ltd. is a Japanese railway company that operates the monorail line connecting central Tokyo with Haneda Airport.
-
B.
Osaka Monorail Co., Ltd.
Osaka Monorail Co., Ltd. is the railway company that operates the Osaka Monorail transit system in Osaka Prefecture, Japan.
-
C.
Yokohama Minatomirai Railway Company
Yokohama Minatomirai Railway Company is a Japanese private railway operator that manages and operates the Minatomirai Line in Yokohama, Kanagawa Prefecture.
-
D.
Keihan Electric Railway Co., Ltd.
Keihan Electric Railway Co., Ltd. is a major Japanese private railway operator serving the Osaka–Kyoto region, known for its extensive commuter rail network and related transportation and leisure businesses.
-
E.
Tokyu Railways
Tokyu Railways is a major private railway operator in the Greater Tokyo area of Japan, known for its extensive commuter rail network and integration with urban development projects.
- 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: Tama Toshi Monorail Co., Ltd. Target entity description: Tama Toshi Monorail Co., Ltd. is a Japanese transportation company that owns and operates the Tama Toshi Monorail Line serving the Tama area of western Tokyo.
-
A.
Tokyo Monorail Co., Ltd.
Tokyo Monorail Co., Ltd. is a Japanese railway company that operates the monorail line connecting central Tokyo with Haneda Airport.
-
B.
Osaka Monorail Co., Ltd.
Osaka Monorail Co., Ltd. is the railway company that operates the Osaka Monorail transit system in Osaka Prefecture, Japan.
-
C.
Yokohama Minatomirai Railway Company
Yokohama Minatomirai Railway Company is a Japanese private railway operator that manages and operates the Minatomirai Line in Yokohama, Kanagawa Prefecture.
-
D.
Keihan Electric Railway Co., Ltd.
Keihan Electric Railway Co., Ltd. is a major Japanese private railway operator serving the Osaka–Kyoto region, known for its extensive commuter rail network and related transportation and leisure businesses.
-
E.
Tokyu Railways
Tokyu Railways is a major private railway operator in the Greater Tokyo area of Japan, known for its extensive commuter rail network and integration with urban development projects.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
monorail operator
ⓘ
railway company ⓘ transportation company ⓘ |
| country | Japan ⓘ |
| hasLine | Tama Toshi Monorail Line NERFINISHED ⓘ |
| headquartersLocation |
Tama, Tokyo
NERFINISHED
ⓘ
Tokyo ⓘ |
| industry |
public transportation
ⓘ
rail transport ⓘ |
| locatedInAdministrativeTerritorialEntity |
Japan
NERFINISHED
ⓘ
Tokyo Metropolis NERFINISHED ⓘ |
| modeOfTransport |
monorail
ⓘ
urban rail transit ⓘ |
| operates | Tama Toshi Monorail Line NERFINISHED ⓘ |
| operatesInCity | Tama, Tokyo NERFINISHED ⓘ |
| operatesInCountry | Japan NERFINISHED ⓘ |
| operatesInPrefecture | Tokyo NERFINISHED ⓘ |
| owns | Tama Toshi Monorail Line NERFINISHED ⓘ |
| primaryService | passenger transport ⓘ |
| railwayLineTypeOperated | monorail ⓘ |
| regionServed |
Tama, Tokyo
NERFINISHED
ⓘ
western Tokyo ⓘ |
| serviceArea |
Tama area
NERFINISHED
ⓘ
western Tokyo ⓘ |
| transportType | urban monorail system ⓘ |
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: Tama Toshi Monorail Co., Ltd. Description of subject: Tama Toshi Monorail Co., Ltd. is a Japanese transportation company that owns and operates the Tama Toshi Monorail Line serving the Tama area of western Tokyo.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.