Triple
T12982895
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Sri Lanka Railways |
E321694
|
entity |
| Predicate | formerName |
P65
|
FINISHED |
| Object | Ceylon Government Railway |
E321694
|
NE FINISHED |
How this triple was built (2 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: Ceylon Government Railway | Statement: [Sri Lanka Railways, formerName, Ceylon Government Railway]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Ceylon Government Railway Context triple: [Sri Lanka Railways, formerName, Ceylon Government Railway]
-
A.
Sri Lanka Railways
chosen
Sri Lanka Railways is the state-owned national railway operator of Sri Lanka, providing passenger and freight rail services across the country.
-
B.
Madras Railway Company
The Madras Railway Company was a British-era railway company in colonial India that developed and operated key rail lines in southern India, including the early construction of the Nilgiri Mountain Railway.
-
C.
Colombo–Matara railway line
The Colombo–Matara railway line is a coastal rail route in southwestern Sri Lanka that connects the capital region with major southern cities, including Galle and Matara.
-
D.
East Indian Railway Company
The East Indian Railway Company was a major British colonial-era railway company that built and operated key rail lines in eastern and northern India during the 19th and early 20th centuries.
-
E.
Myanma Railways
Myanma Railways is the state-owned national railway operator of Myanmar, responsible for the country’s passenger and freight rail services and infrastructure.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69d8076479b8819090afce3591939cdf |
completed | April 9, 2026, 8:09 p.m. |
| NER | Named-entity recognition | batch_69d97e5ca33481909a6cb06c636889f9 |
completed | April 10, 2026, 10:49 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69f6d5f4bedc81909b8dfa79a842e12d |
completed | May 3, 2026, 4:58 a.m. |
Created at: April 9, 2026, 8:39 p.m.