Triple
T8654607
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Ongar |
E205382
|
entity |
| Predicate | formerRailTerminusOf |
P26272
|
FINISHED |
| Object | Epping–Ongar branch line |
E640226
|
NE FINISHED |
How this triple was built (3 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: Epping–Ongar branch line | Statement: [Ongar, formerRailTerminusOf, Epping–Ongar branch line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Epping–Ongar branch line Context triple: [Ongar, formerRailTerminusOf, Epping–Ongar branch line]
-
A.
Epping to Ongar branch
chosen
The Epping to Ongar branch was a rural stretch of railway in Essex that once formed the outermost section of the London Underground’s Central line before its closure in the 1990s.
-
B.
Chingford branch line
The Chingford branch line is a suburban railway route in northeast London that connects central London with the Chingford area, serving several intermediate stations along the way.
-
C.
Epping line
The Epping line was a suburban railway line in Melbourne, Australia, that historically served the northern suburbs before being extended and renamed the Mernda line.
-
D.
Romford–Upminster line
The Romford–Upminster line is a short suburban railway in east London linking Romford and Upminster, operated as part of the London Overground network.
-
E.
Hertford East branch line
The Hertford East branch line is a suburban railway line in Hertfordshire, England, providing passenger services between Hertford East and the main rail network via the Lea Valley corridor.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: formerRailTerminusOf Context triple: [Ongar, formerRailTerminusOf, Epping–Ongar branch line]
-
A.
railroadTerminusFor
Indicates that one location serves as the end point or final station of a particular railroad line for another location.
-
B.
railLineTerminus
chosen
Indicates that a rail line ends or terminates at the specified location or station.
-
C.
connectsToRailStation
Indicates that one entity has a direct link, route, or access connection to a rail station.
-
D.
formerRailwayLine
Indicates that a railway line previously existed in the past but is no longer in operation or has been decommissioned.
-
E.
railTerminus
Indicates that a railway line or service ends at a particular station or location, which serves as its final terminus.
- F. None of above.
Provenance (4 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_69ca8350897c819086cde7596fbe5fe7 |
completed | March 30, 2026, 2:06 p.m. |
| NER | Named-entity recognition | batch_69cc48432568819093b9a867b4f62b78 |
completed | March 31, 2026, 10:18 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ceccdaad2881908f131ee9da2841d1 |
completed | April 2, 2026, 8:08 p.m. |
| PD | Predicate disambiguation | batch_69cc45619460819091e83ffdec99c865 |
completed | March 31, 2026, 10:06 p.m. |
Created at: March 30, 2026, 6:29 p.m.