Triple
T23160626
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Purley railway station |
E578570
|
entity |
| Predicate | railwayLine |
P848
|
FINISHED |
| Object | Caterham Line |
—
|
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: Caterham Line | Statement: [Purley railway station, railwayLine, Caterham Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Caterham Line Context triple: [Purley railway station, railwayLine, Caterham Line]
-
A.
Caterham line
chosen
The Caterham line is a suburban railway route in Surrey, England, connecting the town of Caterham with the main London rail network.
-
B.
Cranleigh Line
The Cranleigh Line was a former railway route in Surrey, England, that connected Guildford to Horsham and served rural communities including the village of Cranleigh before its closure in the 1960s.
-
C.
Watercress Line
The Watercress Line is a preserved heritage railway in Hampshire, England, known for its steam-hauled trains running through the countryside between Alton and Alresford.
-
D.
Warminster Line
The Warminster Line is a commuter rail service in the Philadelphia region that connects Center City with suburban communities in and around Warminster, Pennsylvania.
-
E.
Leppington Line
The Leppington Line is a suburban railway line in Sydney, Australia, serving the city’s south‑western growth areas and connecting them to the broader metropolitan rail network.
- 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_69e245fc75348190a0288401044c8af8 |
completed | April 17, 2026, 2:38 p.m. |
| NER | Named-entity recognition | batch_69f18f006930819097aafef87405d737 |
completed | April 29, 2026, 4:54 a.m. |
Created at: April 17, 2026, 4:02 p.m.