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.