Triple

T9544704
Position Surface form Disambiguated ID Type / Status
Subject Tokyu Meguro Line E230250 entity
Predicate hasStation P35 FINISHED
Object Oimachi Station (Meguro Line platforms at Ookayama–Oimachi junction area)
Oimachi Station (Meguro Line platforms at the Ookayama–Oimachi junction area) is a key stop on Tokyo’s Tokyu Meguro Line, serving as an important transfer point within the city’s private railway network.
E805840 NE FINISHED

How this triple was built (4 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: Oimachi Station (Meguro Line platforms at Ookayama–Oimachi junction area) | Statement: [Tokyu Meguro Line, hasStation, Oimachi Station (Meguro Line platforms at Ookayama–Oimachi junction area)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Oimachi Station (Meguro Line platforms at Ookayama–Oimachi junction area)
Context triple: [Tokyu Meguro Line, hasStation, Oimachi Station (Meguro Line platforms at Ookayama–Oimachi junction area)]
  • A. Ichigaya Station on Toei Shinjuku Line
    Ichigaya Station on the Toei Shinjuku Line is an underground subway station in central Tokyo serving the Shinjuku Line and providing convenient access to the Ichigaya business and educational district.
  • B. Jimbocho Station on Toei Shinjuku Line
    Jimbocho Station on the Toei Shinjuku Line is an underground subway station in Tokyo’s Chiyoda ward, serving the Jimbocho district and providing transfers to multiple Tokyo Metro and Toei lines.
  • C. Chuo Line at Morinomiya Station
    The Chuo Line at Morinomiya Station is a key Osaka Metro subway line stop that serves as an important transfer point for passengers traveling between central Osaka and surrounding areas.
  • D. Keio Line at Meidaimae Station
    The Keio Line at Meidaimae Station is a major commuter rail line in Tokyo operated by Keio Corporation, providing key suburban–central city connectivity and an interchange with the Keio Inokashira Line.
  • E. Mejiro Station on Yamanote Line
    Mejiro Station on the Yamanote Line is a small, relatively quiet JR East railway station in Tokyo’s Toshima ward, situated between the major hubs of Ikebukuro and Takadanobaba.
  • 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: Oimachi Station (Meguro Line platforms at Ookayama–Oimachi junction area)
Triple: [Tokyu Meguro Line, hasStation, Oimachi Station (Meguro Line platforms at Ookayama–Oimachi junction area)]
Generated description
Oimachi Station (Meguro Line platforms at the Ookayama–Oimachi junction area) is a key stop on Tokyo’s Tokyu Meguro Line, serving as an important transfer point within the city’s private railway network.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Oimachi Station (Meguro Line platforms at Ookayama–Oimachi junction area)
Target entity description: Oimachi Station (Meguro Line platforms at the Ookayama–Oimachi junction area) is a key stop on Tokyo’s Tokyu Meguro Line, serving as an important transfer point within the city’s private railway network.
  • A. Ichigaya Station on Toei Shinjuku Line
    Ichigaya Station on the Toei Shinjuku Line is an underground subway station in central Tokyo serving the Shinjuku Line and providing convenient access to the Ichigaya business and educational district.
  • B. Jimbocho Station on Toei Shinjuku Line
    Jimbocho Station on the Toei Shinjuku Line is an underground subway station in Tokyo’s Chiyoda ward, serving the Jimbocho district and providing transfers to multiple Tokyo Metro and Toei lines.
  • C. Chuo Line at Morinomiya Station
    The Chuo Line at Morinomiya Station is a key Osaka Metro subway line stop that serves as an important transfer point for passengers traveling between central Osaka and surrounding areas.
  • D. Keio Line at Meidaimae Station
    The Keio Line at Meidaimae Station is a major commuter rail line in Tokyo operated by Keio Corporation, providing key suburban–central city connectivity and an interchange with the Keio Inokashira Line.
  • E. Mejiro Station on Yamanote Line
    Mejiro Station on the Yamanote Line is a small, relatively quiet JR East railway station in Tokyo’s Toshima ward, situated between the major hubs of Ikebukuro and Takadanobaba.
  • F. None of above. chosen

Provenance (5 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_69ca847c70b8819088a0a0bad64a50d6 completed March 30, 2026, 2:11 p.m.
NER Named-entity recognition batch_69cd9901f2bc8190a4076f5947660df9 completed April 1, 2026, 10:15 p.m.
NED1 Entity disambiguation (via context triple) batch_69d14c6cd93c8190ac197afda780ce78 completed April 4, 2026, 5:37 p.m.
NEDg Description generation batch_69d14d44b7f08190b66fecb315b37535 completed April 4, 2026, 5:41 p.m.
NED2 Entity disambiguation (via description) batch_69d14e0823e881908ed723d20f14789b completed April 4, 2026, 5:44 p.m.
Created at: March 30, 2026, 8:01 p.m.