Triple

T21297401

Position	Surface form	Disambiguated ID	Type / Status
Subject	Bologna–Pistoia railway	`E524959`	entity
Predicate	alsoKnownAs	`P39`	FINISHED
Object	Porrettana railway	`—`	NE NERFINISHED

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: Porrettana railway | Statement: [Bologna–Pistoia railway, alsoKnownAs, Porrettana railway]

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Porrettana railway
Context triple: [Bologna–Pistoia railway, alsoKnownAs, Porrettana railway]

A. Anhalt Railway
The Anhalt Railway is a major German railway line historically connecting Berlin with the Anhalt region and further south, serving both regional and long-distance traffic.
B. Dill Railway
Dill Railway is a German railway line in the state of Hesse that connects the town of Dillenburg with larger regional and long-distance rail networks.
C. Filstal Railway
The Filstal Railway is a major rail line in the German state of Baden-Württemberg that runs through the Fils Valley, forming part of the important east–west route between Stuttgart and Ulm.
D. Derby Line
Derby Line is a small Vermont village uniquely situated on the U.S.–Canada border, known for buildings and streets that straddle both countries.
E. Pelion Railway
Pelion Railway is a historic narrow-gauge mountain railway in Greece, renowned for its scenic route through the Pelion peninsula and its traditional steam trains.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Porrettana railway
Target entity description: The Porrettana railway is a historic trans-Apennine rail line in Italy that connects Bologna and Pistoia, notable as one of the first major mountain railways in the country.

A. Anhalt Railway
The Anhalt Railway is a major German railway line historically connecting Berlin with the Anhalt region and further south, serving both regional and long-distance traffic.
B. Dill Railway
Dill Railway is a German railway line in the state of Hesse that connects the town of Dillenburg with larger regional and long-distance rail networks.
C. Filstal Railway
The Filstal Railway is a major rail line in the German state of Baden-Württemberg that runs through the Fils Valley, forming part of the important east–west route between Stuttgart and Ulm.
D. Derby Line
Derby Line is a small Vermont village uniquely situated on the U.S.–Canada border, known for buildings and streets that straddle both countries.
E. Pelion Railway
Pelion Railway is a historic narrow-gauge mountain railway in Greece, renowned for its scenic route through the Pelion peninsula and its traditional steam trains.
F. None of above. chosen

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_69e0b517e6748190850d6f6ddf323d69`	completed	April 16, 2026, 10:08 a.m.
NER	Named-entity recognition	`batch_69e7385968308190bc9fe5c2bd4598e6`	completed	April 21, 2026, 8:42 a.m.

Created at: April 16, 2026, 4:04 p.m.