Sotobō Line
E691155
The Sotobō Line is a railway line in Chiba Prefecture, Japan, running along the Pacific coast of the Bōsō Peninsula and connecting suburban and regional communities with the greater Tokyo area.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sotobō Line canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5709172 — 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: Sotobō Line Context triple: [Boso Peninsula, hasTransportation, Sotobō Line]
-
A.
Karasuma Line
The Karasuma Line is a major Kyoto Municipal Subway line running north–south through Kyoto, connecting key districts and transportation hubs including Kyoto Station.
-
B.
Jōban Line
The Jōban Line is a major railway corridor in Japan operated by JR East, connecting central Tokyo with the northeastern Kanto and Tōhoku regions along the Pacific coast.
-
C.
Takasaki Line
The Takasaki Line is a major railway line in Japan operated by JR East that connects the Tokyo metropolitan area with Saitama and Gunma Prefectures, serving as an important commuter and intercity route.
-
D.
Tsuyama Line
The Tsuyama Line is a regional railway line in Okayama Prefecture, Japan, operated by JR West and known for connecting rural communities with the city of Tsuyama.
-
E.
Hanzōmon Line
The Hanzōmon Line is a Tokyo Metro subway line in Tokyo, Japan, connecting central districts with eastern and southwestern suburbs as part of the city’s urban rail network.
- 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: Sotobō Line Target entity description: The Sotobō Line is a railway line in Chiba Prefecture, Japan, running along the Pacific coast of the Bōsō Peninsula and connecting suburban and regional communities with the greater Tokyo area.
-
A.
Karasuma Line
The Karasuma Line is a major Kyoto Municipal Subway line running north–south through Kyoto, connecting key districts and transportation hubs including Kyoto Station.
-
B.
Jōban Line
The Jōban Line is a major railway corridor in Japan operated by JR East, connecting central Tokyo with the northeastern Kanto and Tōhoku regions along the Pacific coast.
-
C.
Takasaki Line
The Takasaki Line is a major railway line in Japan operated by JR East that connects the Tokyo metropolitan area with Saitama and Gunma Prefectures, serving as an important commuter and intercity route.
-
D.
Tsuyama Line
The Tsuyama Line is a regional railway line in Okayama Prefecture, Japan, operated by JR West and known for connecting rural communities with the city of Tsuyama.
-
E.
Hanzōmon Line
The Hanzōmon Line is a Tokyo Metro subway line in Tokyo, Japan, connecting central districts with eastern and southwestern suburbs as part of the city’s urban rail network.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
heavy rail
ⓘ
railway line ⓘ |
| connectsCity |
Chiba
NERFINISHED
ⓘ
Ichinomiya NERFINISHED ⓘ Kamogawa NERFINISHED ⓘ Katsuura NERFINISHED ⓘ Mobara NERFINISHED ⓘ Onjuku NERFINISHED ⓘ Ōhara NERFINISHED ⓘ |
| connectsTo |
Keiyō Line
NERFINISHED
ⓘ
Sotobō Line NERFINISHED ⓘ Sōbu Main Line NERFINISHED ⓘ Uchibō Line NERFINISHED ⓘ |
| country | Japan ⓘ |
| electrification | 1500 V DC overhead catenary ⓘ |
| electrificationCompleted | 20th century ⓘ |
| followsCoastOf | Pacific Ocean NERFINISHED ⓘ |
| hasService |
Local trains
ⓘ
Wakashio limited express NERFINISHED ⓘ |
| hasThroughServiceTo |
Shinjuku Station (via Shinjuku–Sōbu Line routes)
NERFINISHED
ⓘ
Tokyo Station (via Sōbu Line Rapid) NERFINISHED ⓘ |
| locatedIn |
Chiba Prefecture
NERFINISHED
ⓘ
Honshu ⓘ |
| locatedInTimeZone | Japan Standard Time ⓘ |
| locatedOn | Bōsō Peninsula NERFINISHED ⓘ |
| numberOfTracks |
double track (Chiba – Kazusa-Ichinomiya)
ⓘ
single track (Kazusa-Ichinomiya – Awa-Kamogawa) ⓘ |
| opened | late 19th century ⓘ |
| operator |
East Japan Railway Company
NERFINISHED
ⓘ
JR East NERFINISHED ⓘ |
| owner | East Japan Railway Company NERFINISHED ⓘ |
| partOfNetwork | JR East network NERFINISHED ⓘ |
| primaryUse |
commuter transport
ⓘ
tourist access to Bōsō Peninsula ⓘ |
| regionServed |
Bōsō Peninsula
NERFINISHED
ⓘ
Greater Tokyo Area NERFINISHED ⓘ |
| rollingStockUsed |
209 series EMU
NERFINISHED
ⓘ
E131 series EMU NERFINISHED ⓘ E233 series EMU NERFINISHED ⓘ E257 series EMU NERFINISHED ⓘ |
| serviceType |
commuter rail
ⓘ
limited express ⓘ regional rail ⓘ |
| terminusStation |
Awa-Kamogawa Station
NERFINISHED
ⓘ
Chiba Station NERFINISHED ⓘ |
| trackGauge |
1067 mm
ⓘ
Cape 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: Sotobō Line Description of subject: The Sotobō Line is a railway line in Chiba Prefecture, Japan, running along the Pacific coast of the Bōsō Peninsula and connecting suburban and regional communities with the greater Tokyo area.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Boso Peninsula