Triple
T23390516
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Gletsch railway station |
E594002
|
entity |
| Predicate | railwayLine |
P848
|
FINISHED |
| Object | Furka–Oberalp line (heritage mountain section) |
—
|
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: Furka–Oberalp line (heritage mountain section) | Statement: [Gletsch railway station, railwayLine, Furka–Oberalp line (heritage mountain section)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Furka–Oberalp line (heritage mountain section) Context triple: [Gletsch railway station, railwayLine, Furka–Oberalp line (heritage mountain section)]
-
A.
Furka–Oberalp line
chosen
The Furka–Oberalp line is a historic Swiss metre-gauge mountain railway crossing the Alps between the cantons of Valais, Uri, and Graubünden, renowned for its steep gradients, scenic vistas, and partial operation as a heritage steam railway.
-
B.
Furka Oberalp railway
The Furka Oberalp railway is a historic Swiss narrow-gauge mountain railway renowned for its spectacular alpine scenery and steep, winding route through the central Swiss Alps.
-
C.
Landquart–Davos railway line
The Landquart–Davos railway line is a Swiss metre-gauge mountain railway operated by the Rhaetian Railway, linking the town of Landquart with the alpine resort of Davos through the canton of Graubünden.
-
D.
Engadin line
The Engadin line is a scenic metre-gauge railway route in Switzerland’s canton of Graubünden that runs through the Engadin valley as part of the Rhaetian Railway network.
-
E.
Brünig railway line
The Brünig railway line is a scenic Swiss metre-gauge rail route operated by Zentralbahn that connects Lucerne and Interlaken across the Alps.
- 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_69e25d2754fc819085deea939bde60ab |
completed | April 17, 2026, 4:17 p.m. |
| NER | Named-entity recognition | batch_69f1a49bdfec8190afa592c66660c279 |
completed | April 29, 2026, 6:26 a.m. |
Created at: April 17, 2026, 5:35 p.m.