Tokyo Yokohama Electric Railway (portion of lines)
E576605
Tokyo Yokohama Electric Railway (portion of lines) refers to the segments of the former Tokyo-Yokohama interurban railway network that were later integrated into and operated by Keio Corporation.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Tokyo Yokohama Electric Railway (portion of lines) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6203617 — 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: Tokyo Yokohama Electric Railway (portion of lines) Context triple: [Keio Corporation, predecessor, Tokyo Yokohama Electric Railway (portion of lines)]
-
A.
Tobu Railway
Tobu Railway is a major private railway company in Japan that operates extensive rail networks in the Greater Tokyo area and surrounding regions.
-
B.
Seibu Railway
Seibu Railway is a major private railway operator in the Greater Tokyo area of Japan, running extensive commuter and interurban train services across Tokyo and Saitama.
-
C.
Odakyu Electric Railway
Odakyu Electric Railway is a major private railway company in Japan that operates commuter and limited express train services connecting central Tokyo with surrounding suburban and regional areas.
-
D.
Tokyu railway network
The Tokyu railway network is a major private rail system in the Greater Tokyo area, operated by Tokyu Corporation and serving key suburban and urban corridors including central hubs like Shibuya.
-
E.
Sanyo Electric Railway
Sanyo Electric Railway is a Japanese private railway company operating commuter rail services primarily in Hyōgo Prefecture, including routes that interconnect with other major regional rail networks.
- 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: Tokyo Yokohama Electric Railway (portion of lines) Target entity description: Tokyo Yokohama Electric Railway (portion of lines) refers to the segments of the former Tokyo-Yokohama interurban railway network that were later integrated into and operated by Keio Corporation.
-
A.
Tobu Railway
Tobu Railway is a major private railway company in Japan that operates extensive rail networks in the Greater Tokyo area and surrounding regions.
-
B.
Seibu Railway
Seibu Railway is a major private railway operator in the Greater Tokyo area of Japan, running extensive commuter and interurban train services across Tokyo and Saitama.
-
C.
Odakyu Electric Railway
Odakyu Electric Railway is a major private railway company in Japan that operates commuter and limited express train services connecting central Tokyo with surrounding suburban and regional areas.
-
D.
Tokyu railway network
The Tokyu railway network is a major private rail system in the Greater Tokyo area, operated by Tokyu Corporation and serving key suburban and urban corridors including central hubs like Shibuya.
-
E.
Sanyo Electric Railway
Sanyo Electric Railway is a Japanese private railway company operating commuter rail services primarily in Hyōgo Prefecture, including routes that interconnect with other major regional rail networks.
- F. None of above. chosen
Statements (20)
| Predicate | Object |
|---|---|
| instanceOf |
former interurban railway infrastructure
ⓘ
railway line segment ⓘ |
| category | defunct railway infrastructure absorbed by another operator ⓘ |
| country | Japan ⓘ |
| electrification | electric railway ⓘ |
| formerOperator |
Tokyo-Yokohama Electric Railway
ⓘ
linked to:
Tokyu Railways
|
| gauge | standard gauge (inferred from Keio network where applicable) ⓘ |
| historicalRole | part of early Tokyo–Yokohama interurban transport ⓘ |
| locatedIn |
Kanagawa Prefecture
ⓘ
Tokyo ⓘ |
| networkIntegration | Keio railway network ⓘ |
| operator | Keio Corporation ⓘ |
| ownershipAfterIntegration | Keio Corporation ⓘ |
| partOf |
Tokyo-Yokohama Electric Railway network
ⓘ
linked to:
Tokyu railway network
|
| railwaySystem | private railway in Japan ⓘ |
| railwayType | interurban railway ⓘ |
| regionServed |
Greater Tokyo Area
ⓘ
linked to:
Tokyo metropolitan area
|
| status | integrated into Keio network ⓘ |
| successorOperator | Keio Corporation ⓘ |
| use | commuter rail service ⓘ |
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: Tokyo Yokohama Electric Railway (portion of lines) Description of subject: Tokyo Yokohama Electric Railway (portion of lines) refers to the segments of the former Tokyo-Yokohama interurban railway network that were later integrated into and operated by Keio Corporation.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.