Triple

T23162006
Position Surface form Disambiguated ID Type / Status
Subject E217 series E578610 entity
Predicate primaryDepotDuringService P32897 FINISHED
Object Kamakura Rolling Stock Center
Kamakura Rolling Stock Center is a major JR East railway maintenance and stabling facility in Kamakura, Kanagawa Prefecture, serving trains operating on nearby commuter lines.
E1575288 NE FINISHED

How this triple was built (5 steps)

Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.

NER Named-entity recognition gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Kamakura Rolling Stock Center | Statement: [E217 series, primaryDepotDuringService, Kamakura Rolling Stock Center]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Kamakura Rolling Stock Center
Context triple: [E217 series, primaryDepotDuringService, Kamakura Rolling Stock Center]
  • A. Akita Shinkansen Depot
    Akita Shinkansen Depot is a railway maintenance and storage facility serving the Akita Shinkansen high-speed train line in Japan.
  • B. JR East Niitsu Rolling Stock Plant
    JR East Niitsu Rolling Stock Plant is a major railway rolling stock manufacturing and maintenance facility operated by East Japan Railway Company in Niigata Prefecture, Japan.
  • C. Nakano Depot
    Nakano Depot is a major Tokyo Metro facility used for the storage, inspection, and maintenance of Marunouchi Line trains.
  • D. Hikone Depot
    Hikone Depot is a railway maintenance and storage facility serving trains on the Ohmi Railway network in Hikone, Shiga Prefecture, Japan.
  • E. Tsurumi-ryokuchi Depot
    Tsurumi-ryokuchi Depot is a maintenance and storage facility for trains serving Osaka’s Nagahori Tsurumi-ryokuchi Line.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg Description generation gpt-5.1
Instruction
Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Kamakura Rolling Stock Center
Triple: [E217 series, primaryDepotDuringService, Kamakura Rolling Stock Center]
Generated description
Kamakura Rolling Stock Center is a major JR East railway maintenance and stabling facility in Kamakura, Kanagawa Prefecture, serving trains operating on nearby commuter lines.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Kamakura Rolling Stock Center
Target entity description: Kamakura Rolling Stock Center is a major JR East railway maintenance and stabling facility in Kamakura, Kanagawa Prefecture, serving trains operating on nearby commuter lines.
  • A. Akita Shinkansen Depot
    Akita Shinkansen Depot is a railway maintenance and storage facility serving the Akita Shinkansen high-speed train line in Japan.
  • B. JR East Niitsu Rolling Stock Plant
    JR East Niitsu Rolling Stock Plant is a major railway rolling stock manufacturing and maintenance facility operated by East Japan Railway Company in Niigata Prefecture, Japan.
  • C. Nakano Depot
    Nakano Depot is a major Tokyo Metro facility used for the storage, inspection, and maintenance of Marunouchi Line trains.
  • D. Hikone Depot
    Hikone Depot is a railway maintenance and storage facility serving trains on the Ohmi Railway network in Hikone, Shiga Prefecture, Japan.
  • E. Tsurumi-ryokuchi Depot
    Tsurumi-ryokuchi Depot is a maintenance and storage facility for trains serving Osaka’s Nagahori Tsurumi-ryokuchi Line.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: primaryDepotDuringService
Context triple: [E217 series, primaryDepotDuringService, Kamakura Rolling Stock Center]
  • A. primaryBaseDuringService chosen
    Indicates that a particular base or location serves as the main or designated primary base for an entity during a specified period of service.
  • B. depotFor
    Indicates that one entity serves as a storage or distribution center location dedicated to supporting or supplying another entity.
  • C. depot
    Indicates that an entity serves as a storage or distribution center location for another entity, such as goods, vehicles, or resources.
  • D. primaryHubFor
    Indicates that one entity serves as the main central hub or core point of coordination for another entity or set of entities.
  • E. primaryDeployment
    Indicates that one deployment is designated as the main or most important deployment among multiple possible deployments for an entity.
  • F. None of above.

Provenance (6 batches)

The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.

Step Stage Batch ID Status When
creating Elicitation batch_69e245fc75348190a0288401044c8af8 completed April 17, 2026, 2:38 p.m.
NER Named-entity recognition batch_69f18f019cd881908e3c68d99454da2a completed April 29, 2026, 4:54 a.m.
NED1 Entity disambiguation (via context triple) batch_6a0c30a21a548190add77bc839424eb3 completed May 19, 2026, 9:42 a.m.
NEDg Description generation batch_6a0c330135cc8190b5a0e512bda6277d completed May 19, 2026, 9:53 a.m.
NED2 Entity disambiguation (via description) batch_6a0c375dd5a4819097a80ae43a1c4442 completed May 19, 2026, 10:11 a.m.
PD Predicate disambiguation batch_69ef89ff76808190808ee4ad9dea776b completed April 27, 2026, 4:08 p.m.
Created at: April 17, 2026, 4:02 p.m.