Triple
T12638619
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Northwick Park |
E301830
|
entity |
| Predicate | nearbyRailwayLine |
P25143
|
FINISHED |
| Object | Watford DC line |
E256313
|
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: Watford DC line | Statement: [Northwick Park, nearbyRailwayLine, Watford DC line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Watford DC line Context triple: [Northwick Park, nearbyRailwayLine, Watford DC line]
-
A.
Watford DC line
chosen
The Watford DC line is a suburban railway route in London that runs between London Euston and Watford Junction, primarily serving local commuter services with direct current electrification.
-
B.
Catford Loop Line
The Catford Loop Line is a suburban railway route in southeast London that provides an alternative corridor between central London and Kent, serving several local commuter stations along the way.
-
C.
Dartford Loop line
The Dartford Loop line is a suburban railway route in southeast London that connects London with Dartford via several intermediate stations.
-
D.
Styal Line
The Styal Line is a suburban railway route in Greater Manchester, England, connecting central Manchester with Manchester Airport and surrounding areas.
-
E.
Hertford Loop Line
The Hertford Loop Line is a suburban railway route in Hertfordshire and north London that provides an alternative path to the East Coast Main Line, linking London with Hertford and intermediate commuter towns.
- 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: nearbyRailwayLine Context triple: [Northwick Park, nearbyRailwayLine, Watford DC line]
-
A.
nearestRailwayLine
Indicates that one railway line is the closest in distance to a given location or feature compared to all other railway lines.
-
B.
hasNearbyRailway
chosen
Indicates that one entity is located close to a railway associated with or relevant to another entity.
-
C.
nearestRailwayTerminus
Indicates that one location is the closest railway terminus to another specified place.
-
D.
nearestMajorRailwayJunction
Indicates the closest significant railway junction in terms of distance from a given location or entity.
-
E.
nearUndergroundLine
Indicates that one entity is located close in distance to an underground (subway/metro) line.
- 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_69d7bdec9f9c8190b4bac675b7588211 |
completed | April 9, 2026, 2:55 p.m. |
| NER | Named-entity recognition | batch_69d961ae493481908f82e0d05dce20bd |
completed | April 10, 2026, 8:46 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69f668754acc8190b5585dbd35387867 |
completed | May 2, 2026, 9:11 p.m. |
| PD | Predicate disambiguation | batch_69d960b47130819097e1162ed4fc993a |
completed | April 10, 2026, 8:42 p.m. |
Created at: April 9, 2026, 5:16 p.m.