Triple

T12801626
Position Surface form Disambiguated ID Type / Status
Subject JR Tōkai E306031 entity
Predicate maglevLineUnderDevelopment P106460 FINISHED
Object Tokyo–Nagoya maglev line
The Tokyo–Nagoya maglev line is a planned high-speed magnetic levitation railway in Japan that will form the first segment of the Chūō Shinkansen, dramatically cutting travel time between Tokyo and Nagoya.
E1002373 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: Tokyo–Nagoya maglev line | Statement: [JR Tōkai, maglevLineUnderDevelopment, Tokyo–Nagoya maglev line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Tokyo–Nagoya maglev line
Context triple: [JR Tōkai, maglevLineUnderDevelopment, Tokyo–Nagoya maglev line]
  • A. 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.
  • B. Chiba Urban Monorail
    Chiba Urban Monorail is a suspended monorail system in Chiba, Japan, known as one of the world’s longest urban monorail networks and a key component of the city’s public transit.
  • C. Jōetsu Shinkansen
    The Jōetsu Shinkansen is a high-speed rail line in Japan that connects Tokyo with the Niigata region, providing rapid passenger service through central Honshu.
  • D. Tokaido Shinkansen
    The Tokaido Shinkansen is Japan’s pioneering high-speed rail line connecting Tokyo with Osaka and other major cities, renowned for its speed, punctuality, and heavy passenger usage.
  • E. Sanyo Shinkansen
    Sanyo Shinkansen is a high-speed railway line in Japan that connects Osaka with western Honshu cities such as Hiroshima and Fukuoka as part of the Shinkansen network.
  • 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: Tokyo–Nagoya maglev line
Triple: [JR Tōkai, maglevLineUnderDevelopment, Tokyo–Nagoya maglev line]
Generated description
The Tokyo–Nagoya maglev line is a planned high-speed magnetic levitation railway in Japan that will form the first segment of the Chūō Shinkansen, dramatically cutting travel time between Tokyo and Nagoya.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Tokyo–Nagoya maglev line
Target entity description: The Tokyo–Nagoya maglev line is a planned high-speed magnetic levitation railway in Japan that will form the first segment of the Chūō Shinkansen, dramatically cutting travel time between Tokyo and Nagoya.
  • A. 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.
  • B. Chiba Urban Monorail
    Chiba Urban Monorail is a suspended monorail system in Chiba, Japan, known as one of the world’s longest urban monorail networks and a key component of the city’s public transit.
  • C. Jōetsu Shinkansen
    The Jōetsu Shinkansen is a high-speed rail line in Japan that connects Tokyo with the Niigata region, providing rapid passenger service through central Honshu.
  • D. Tokaido Shinkansen
    The Tokaido Shinkansen is Japan’s pioneering high-speed rail line connecting Tokyo with Osaka and other major cities, renowned for its speed, punctuality, and heavy passenger usage.
  • E. Sanyo Shinkansen
    Sanyo Shinkansen is a high-speed railway line in Japan that connects Osaka with western Honshu cities such as Hiroshima and Fukuoka as part of the Shinkansen network.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: maglevLineUnderDevelopment
Context triple: [JR Tōkai, maglevLineUnderDevelopment, Tokyo–Nagoya maglev line]
  • A. maglevServiceStartDate
    Indicates the date on which a maglev (magnetic levitation) service first began operating.
  • B. hasLightRailStationPlanned
    Indicates that a light rail station is planned or scheduled to be built at or associated with the given entity.
  • C. monorailLines
    Indicates that there is a monorail transit line or system associated with, serving, or present in the referenced entity.
  • D. metroLineInaugurated
    Indicates that a metro line was officially opened and began operation on a specific date or during a specific event.
  • E. railTransitLengthPlanned
    Indicates the total length of rail transit infrastructure that is planned but not yet built or in operation.
  • F. None of above. chosen

Provenance (7 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_69d7bdf366888190a8cccb982606889c completed April 9, 2026, 2:55 p.m.
NER Named-entity recognition batch_69d96e7d3f5c8190bf01bef5d263ca26 completed April 10, 2026, 9:41 p.m.
NED1 Entity disambiguation (via context triple) batch_69f6851143588190b0980e760e030b0b completed May 2, 2026, 11:13 p.m.
NEDg Description generation batch_69f687fffe9c81909c58129162a0c231 completed May 2, 2026, 11:25 p.m.
NED2 Entity disambiguation (via description) batch_69f688cc57048190ba7bacdcd6c0c182 completed May 2, 2026, 11:29 p.m.
PD Predicate disambiguation batch_69d9640ed7448190b276e7fab649f7d2 completed April 10, 2026, 8:56 p.m.
PDg Predicate description generation batch_69d96d88be0481908c311f1e71b61e70 completed April 10, 2026, 9:37 p.m.
Created at: April 9, 2026, 5:30 p.m.