Triple
T17901407
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Northwood tube station |
E447586
|
entity |
| Predicate | servedByService |
P1294
|
FINISHED |
| Object | Metropolitan line fast services (peak hours) |
—
|
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: Metropolitan line fast services (peak hours) | Statement: [Northwood tube station, servedByService, Metropolitan line fast services (peak hours)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Metropolitan line fast services (peak hours) Context triple: [Northwood tube station, servedByService, Metropolitan line fast services (peak hours)]
-
A.
Metropolitan line
chosen
The Metropolitan line is one of the oldest lines of the London Underground, running from central London into the northwestern suburbs and beyond.
-
B.
Metroliner service
Metroliner service was Amtrak’s high-speed, premium passenger train service that operated primarily along the Northeast Corridor between New York City and Washington, D.C.
-
C.
Metro Express
Metro Express is a faster, limited-stop service operated as part of the broader Metro Bus public transportation system.
-
D.
weekday peak Purple Line Express
The weekday peak Purple Line Express is a Chicago 'L' rapid transit service pattern that operates express trains on the Purple Line during weekday rush hours.
-
E.
M16 line
The M16 line is a rapid transit route within the Istanbul Metro system that serves passengers in Turkey’s largest 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_69d8b9f59bd48190a6fc925a855b8bac |
completed | April 10, 2026, 8:51 a.m. |
| NER | Named-entity recognition | batch_69e49e98fb688190815ac308e5ed7fde |
completed | April 19, 2026, 9:21 a.m. |
Created at: April 10, 2026, 10:19 a.m.