Triple
T6179187
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Caterham line |
E137895
|
entity |
| Predicate | terminus |
P388
|
FINISHED |
| Object |
Purley railway station
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.
|
E578570
|
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: Purley railway station | Statement: [Caterham line, terminus, Purley railway station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Purley railway station Context triple: [Caterham line, terminus, Purley railway station]
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
Teddington railway station
Teddington railway station is a suburban rail station in southwest London serving the town of Teddington in the London Borough of Richmond upon Thames.
-
E.
Chertsey railway station
Chertsey railway station is a suburban rail station in Surrey, England, serving the town of Chertsey on the South Western Railway 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: Purley railway station Triple: [Caterham line, terminus, Purley railway station]
Generated description
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.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Purley railway station Target entity description: 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.
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
Teddington railway station
Teddington railway station is a suburban rail station in southwest London serving the town of Teddington in the London Borough of Richmond upon Thames.
-
E.
Chertsey railway station
Chertsey railway station is a suburban rail station in Surrey, England, serving the town of Chertsey on the South Western Railway 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_69c008a80f748190ba3d07ffc81acb29 |
completed | March 22, 2026, 3:20 p.m. |
| NER | Named-entity recognition | batch_69c05dcb77948190b5385438f81bf0a8 |
completed | March 22, 2026, 9:23 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c20d7fbbcc8190902e8f104d9991de |
completed | March 24, 2026, 4:05 a.m. |
| NEDg | Description generation | batch_69c2152127f08190a13abec64bc27db5 |
completed | March 24, 2026, 4:37 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69c2157d43048190a0376cdc9024c5f9 |
completed | March 24, 2026, 4:39 a.m. |
Created at: March 22, 2026, 4:18 p.m.