Triple
T18631108
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Tattenham Corner line |
E455417
|
entity |
| Predicate | terminus |
P388
|
FINISHED |
| Object | Purley railway station |
—
|
NE NERFINISHED |
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: Purley railway station | Statement: [Tattenham Corner line, terminus, Purley railway station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Purley railway station Context triple: [Tattenham Corner line, terminus, Purley railway station]
-
A.
Purley railway station
chosen
Purley railway station is a suburban railway station in the London Borough of Croydon that serves as a key junction and commuter hub on the Southern network in South London.
-
B.
Hounslow railway station
Hounslow railway station is a National Rail station in the London Borough of Hounslow providing suburban and commuter services on the line between central London and southwest London.
-
C.
Sanderstead railway station
Sanderstead railway station is a suburban rail station in the London Borough of Croydon, providing commuter services between central London and destinations in Surrey and Sussex.
-
D.
Hendon railway station
Hendon railway station is a suburban railway station in the London Borough of Barnet, serving the Hendon area on the Midland Main Line with Thameslink services into central London and beyond.
-
E.
Herne Hill railway station
Herne Hill railway station is a suburban rail station in south London that provides commuter services connecting the local area to central London and other parts of the city.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (2 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_69d8d38cc7948190a55ea64e5638994e |
completed | April 10, 2026, 10:40 a.m. |
| NER | Named-entity recognition | batch_69e54f07fa8481908b2535b8fba70b7e |
completed | April 19, 2026, 9:54 p.m. |
Created at: April 10, 2026, 11:46 a.m.