Triple

T12064792
Position Surface form Disambiguated ID Type / Status
Subject Tachikawa E287266 entity
Predicate servedByRailwayOperator P20222 FINISHED
Object Tama Toshi Monorail Line
The Tama Toshi Monorail Line is an urban monorail system in western Tokyo, Japan, providing north–south transit through the Tama area and connecting key hubs such as Tachikawa.
E1381689 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: Tama Toshi Monorail Line | Statement: [Tachikawa, servedByRailwayOperator, Tama Toshi Monorail Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Tama Toshi Monorail Line
Context triple: [Tachikawa, servedByRailwayOperator, Tama Toshi Monorail Line]
  • A. Seibu Tamako Line
    The Seibu Tamako Line is a commuter railway line in western Tokyo, Japan, operated by Seibu Railway and serving suburban residential areas between Kokubunji and the Tama region.
  • B. Yurikamome Line
    The Yurikamome Line is an automated, elevated transit line in Tokyo that connects central Tokyo with the Odaiba waterfront area, offering scenic views including a crossing of the Rainbow Bridge.
  • C. Minatomirai Line
    The Minatomirai Line is a private railway line in Yokohama, Japan, connecting central Yokohama with the Minato Mirai 21 waterfront district and offering through services with multiple Tokyo subway and suburban lines.
  • D. Nagoya Subway Tsurumai Line
    The Nagoya Subway Tsurumai Line is a major rapid transit line in Nagoya, Japan, operated by the Nagoya Municipal Subway and serving key urban and suburban areas across the city.
  • E. Toei Mita Line
    The Toei Mita Line is a Tokyo subway line operated by the Tokyo Metropolitan Bureau of Transportation, running north–south through the city and connecting central Tokyo with its northern suburbs.
  • 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: Tama Toshi Monorail Line
Triple: [Tachikawa, servedByRailwayOperator, Tama Toshi Monorail Line]
Generated description
The Tama Toshi Monorail Line is an urban monorail system in western Tokyo, Japan, providing north–south transit through the Tama area and connecting key hubs such as Tachikawa.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Tama Toshi Monorail Line
Target entity description: The Tama Toshi Monorail Line is an urban monorail system in western Tokyo, Japan, providing north–south transit through the Tama area and connecting key hubs such as Tachikawa.
  • A. Seibu Tamako Line
    The Seibu Tamako Line is a commuter railway line in western Tokyo, Japan, operated by Seibu Railway and serving suburban residential areas between Kokubunji and the Tama region.
  • B. Yurikamome Line
    The Yurikamome Line is an automated, elevated transit line in Tokyo that connects central Tokyo with the Odaiba waterfront area, offering scenic views including a crossing of the Rainbow Bridge.
  • C. Minatomirai Line
    The Minatomirai Line is a private railway line in Yokohama, Japan, connecting central Yokohama with the Minato Mirai 21 waterfront district and offering through services with multiple Tokyo subway and suburban lines.
  • D. Nagoya Subway Tsurumai Line
    The Nagoya Subway Tsurumai Line is a major rapid transit line in Nagoya, Japan, operated by the Nagoya Municipal Subway and serving key urban and suburban areas across the city.
  • E. Toei Mita Line
    The Toei Mita Line is a Tokyo subway line operated by the Tokyo Metropolitan Bureau of Transportation, running north–south through the city and connecting central Tokyo with its northern suburbs.
  • 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_69d6ab4846e081908ee7bbd66a6d3459 completed April 8, 2026, 7:23 p.m.
NER Named-entity recognition batch_69d90440dd988190ae2b80367aceb6f7 completed April 10, 2026, 2:08 p.m.
NED1 Entity disambiguation (via context triple) batch_6a074e5e9fb88190aab63e3d3318b63b completed May 15, 2026, 4:48 p.m.
NEDg Description generation batch_6a074f4f3c008190b6483a994b2309cd completed May 15, 2026, 4:52 p.m.
NED2 Entity disambiguation (via description) batch_6a075019f0b48190ae2469b1979e6cce completed May 15, 2026, 4:55 p.m.
Created at: April 8, 2026, 9:48 p.m.