Triple
T14624529
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Chennai Suburban Railway |
E343310
|
entity |
| Predicate | primaryRollingStock |
P1305
|
FINISHED |
| Object |
EMU train
An EMU train is an Electric Multiple Unit passenger train in which each carriage is powered, commonly used for high-frequency suburban and commuter rail services.
|
E1109860
|
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: EMU train | Statement: [Chennai Suburban Railway, primaryRollingStock, EMU train]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: EMU train Context triple: [Chennai Suburban Railway, primaryRollingStock, EMU train]
-
A.
Intercity Express Train
The Intercity Express Train is a modern high-speed passenger train used on long-distance routes in the UK, known for faster journeys, improved comfort, and greater energy efficiency compared to older rolling stock.
-
B.
Voyager trains
Voyager trains are a family of high-speed diesel-electric multiple unit passenger trains widely used on intercity services in the UK rail network.
-
C.
XPT train
The XPT train is a long-distance, high-speed diesel passenger train used in New South Wales, Australia, based on the British InterCity 125 design.
-
D.
SMART train
SMART train is a commuter rail service in California’s North Bay region that connects communities in Marin and Sonoma counties.
-
E.
High Speed Train
The High Speed Train is a British high-speed diesel-powered passenger train, best known for its long-distance intercity services and record-setting performance on the UK rail 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: EMU train Triple: [Chennai Suburban Railway, primaryRollingStock, EMU train]
Generated description
An EMU train is an Electric Multiple Unit passenger train in which each carriage is powered, commonly used for high-frequency suburban and commuter rail services.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: EMU train Target entity description: An EMU train is an Electric Multiple Unit passenger train in which each carriage is powered, commonly used for high-frequency suburban and commuter rail services.
-
A.
Intercity Express Train
The Intercity Express Train is a modern high-speed passenger train used on long-distance routes in the UK, known for faster journeys, improved comfort, and greater energy efficiency compared to older rolling stock.
-
B.
Voyager trains
Voyager trains are a family of high-speed diesel-electric multiple unit passenger trains widely used on intercity services in the UK rail network.
-
C.
XPT train
The XPT train is a long-distance, high-speed diesel passenger train used in New South Wales, Australia, based on the British InterCity 125 design.
-
D.
SMART train
SMART train is a commuter rail service in California’s North Bay region that connects communities in Marin and Sonoma counties.
-
E.
High Speed Train
The High Speed Train is a British high-speed diesel-powered passenger train, best known for its long-distance intercity services and record-setting performance on the UK rail network.
- 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_69d822dffc3c8190aa173b90761bffda |
completed | April 9, 2026, 10:06 p.m. |
| NER | Named-entity recognition | batch_69deb468acc4819083b7e818d5cec809 |
completed | April 14, 2026, 9:40 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69fda92a6b9c8190bdb220444cfbe34a |
completed | May 8, 2026, 9:13 a.m. |
| NEDg | Description generation | batch_69fdb1ad32a4819088e5831f3d74ea4e |
completed | May 8, 2026, 9:49 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69fdb316479c81909343196bb89e5e57 |
completed | May 8, 2026, 9:55 a.m. |
Created at: April 10, 2026, 1:26 a.m.