Triple
T6218544
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Tokyo Metro 08 series |
E139051
|
entity |
| Predicate | couplingType |
P21783
|
FINISHED |
| Object |
Shibata-type coupler
The Shibata-type coupler is a Japanese-designed automatic railway coupling system widely used on electric multiple units for reliable and efficient train connection.
|
E578660
|
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: Shibata-type coupler | Statement: [Tokyo Metro 08 series, couplingType, Shibata-type coupler]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Shibata-type coupler Context triple: [Tokyo Metro 08 series, couplingType, Shibata-type coupler]
-
A.
Scharfenberg coupler
The Scharfenberg coupler is an automatic railway coupling system widely used on modern passenger trains to quickly connect and disconnect cars while integrating mechanical, pneumatic, and electrical links.
-
B.
Janney coupler
The Janney coupler is a widely used automatic railway coupling system designed to securely connect train cars while improving safety and ease of operation compared to earlier link-and-pin couplers.
-
C.
Dellner automatic couplers
Dellner automatic couplers are railway vehicle coupling systems designed to automatically connect and disconnect train units, commonly used on modern multiple-unit fleets such as the Bombardier Voyager family.
-
D.
Khimki lock system
The Khimki lock system is a set of navigation locks near the city of Khimki that regulates water levels and vessel passage along the Moscow Canal.
-
E.
Fell centre rail system
The Fell centre rail system is a historic railway technology that uses an additional central rail and special gripping wheels to provide extra traction and braking on steep gradients.
- 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: Shibata-type coupler Triple: [Tokyo Metro 08 series, couplingType, Shibata-type coupler]
Generated description
The Shibata-type coupler is a Japanese-designed automatic railway coupling system widely used on electric multiple units for reliable and efficient train connection.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Shibata-type coupler Target entity description: The Shibata-type coupler is a Japanese-designed automatic railway coupling system widely used on electric multiple units for reliable and efficient train connection.
-
A.
Scharfenberg coupler
The Scharfenberg coupler is an automatic railway coupling system widely used on modern passenger trains to quickly connect and disconnect cars while integrating mechanical, pneumatic, and electrical links.
-
B.
Janney coupler
The Janney coupler is a widely used automatic railway coupling system designed to securely connect train cars while improving safety and ease of operation compared to earlier link-and-pin couplers.
-
C.
Dellner automatic couplers
Dellner automatic couplers are railway vehicle coupling systems designed to automatically connect and disconnect train units, commonly used on modern multiple-unit fleets such as the Bombardier Voyager family.
-
D.
Khimki lock system
The Khimki lock system is a set of navigation locks near the city of Khimki that regulates water levels and vessel passage along the Moscow Canal.
-
E.
Fell centre rail system
The Fell centre rail system is a historic railway technology that uses an additional central rail and special gripping wheels to provide extra traction and braking on steep gradients.
- 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_69c008aecb0c81909984b48f733ce8ae |
completed | March 22, 2026, 3:20 p.m. |
| NER | Named-entity recognition | batch_69c062a481908190a1418d9fcfaf8137 |
completed | March 22, 2026, 9:44 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c20dbbacf08190bbbb2863e19c3e7c |
completed | March 24, 2026, 4:06 a.m. |
| NEDg | Description generation | batch_69c214980bbc8190b188b3c821ea13ea |
completed | March 24, 2026, 4:35 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69c2157d43048190a0376cdc9024c5f9 |
completed | March 24, 2026, 4:39 a.m. |
Created at: March 22, 2026, 4:21 p.m.