Triple
T16863098
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Furka Base Tunnel |
E409969
|
entity |
| Predicate | previousOwner |
P347
|
FINISHED |
| Object | Furka–Oberalp Bahn |
E1258484
|
NE FINISHED |
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 Bahn | Statement: [Furka Base Tunnel, previousOwner, Furka–Oberalp Bahn]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Furka–Oberalp Bahn Context triple: [Furka Base Tunnel, previousOwner, Furka–Oberalp Bahn]
-
A.
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.
-
B.
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.
-
C.
Albula Railway
The Albula Railway is a renowned Swiss mountain railway line celebrated for its spectacular alpine scenery, spiral tunnels, and status as a UNESCO World Heritage Site.
-
D.
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.
-
E.
Wengernalp Railway
The Wengernalp Railway is a historic Swiss rack railway in the Bernese Oberland that climbs from the Lauterbrunnen and Grindelwald valleys up to Kleine Scheidegg beneath the Eiger, Mönch, and Jungfrau.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69d88395e6c88190b22730f335107c14 |
completed | April 10, 2026, 4:59 a.m. |
| NER | Named-entity recognition | batch_69e3b50488fc8190b3b646543c3ba476 |
completed | April 18, 2026, 4:44 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a0180c181b08190a6e8912f4e1da6a0 |
completed | May 11, 2026, 7:09 a.m. |
Created at: April 10, 2026, 5:24 a.m.