Triple

T21297401
Position Surface form Disambiguated ID Type / Status
Subject Bologna–Pistoia railway E524959 entity
Predicate alsoKnownAs P39 FINISHED
Object Porrettana railway
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.
E1475815 NE FINISHED

How this triple was built (4 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.
NEDg Description generation gpt-5.1
Instruction
Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Porrettana railway
Triple: [Bologna–Pistoia railway, alsoKnownAs, Porrettana railway]
Generated 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.
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 (5 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.
NED1 Entity disambiguation (via context triple) batch_6a099814529c8190a94cfd3355862d0f completed May 17, 2026, 10:27 a.m.
NEDg Description generation batch_6a0998b0c09081909f99cdd4064f55cc completed May 17, 2026, 10:30 a.m.
NED2 Entity disambiguation (via description) batch_6a09993444c88190a5f594315b81c34a completed May 17, 2026, 10:32 a.m.
Created at: April 16, 2026, 4:04 p.m.