Triple

T4142691
Position Surface form Disambiguated ID Type / Status
Subject Valparaíso Metro E89306 entity
Predicate followsRouteOf P2127 FINISHED
Object former Valparaíso–Santiago railway
The former Valparaíso–Santiago railway was a historic Chilean rail line that once connected the coastal city of Valparaíso with the capital Santiago, serving as a key transportation corridor across central Chile.
 E415111 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: former Valparaíso–Santiago railway | Statement: [Valparaíso Metro, followsRouteOf, former Valparaíso–Santiago railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: former Valparaíso–Santiago railway
Context triple: [Valparaíso Metro, followsRouteOf, former Valparaíso–Santiago railway]
  • A. Antofagasta–Bolivia Railway
    The Antofagasta–Bolivia Railway is a historic trans-Andean rail line linking Chile’s Pacific coast with Bolivia’s interior, primarily built to transport minerals from the Andean region to port.
  • B. Chile rail network
    The Chile rail network is the national railway system of Chile, comprising passenger and freight lines that connect major cities and regions along the country’s long north–south axis.
  • C. Chepe railway
    The Chepe railway is a scenic passenger train route in northern Mexico that traverses the dramatic landscapes and deep gorges of the Copper Canyon.
  • D. Ferrocarril Central Andino
    Ferrocarril Central Andino is a major Peruvian railway line that crosses the Andes, historically known for being one of the highest standard-gauge railways in the world and a key link between Lima and the country’s central highlands.
  • E. Arica–La Paz Railway
    The Arica–La Paz Railway is a historic trans-Andean rail line connecting the Chilean port city of Arica with Bolivia’s capital, La Paz, primarily built to facilitate Bolivian access to the Pacific Ocean.
  • 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: former Valparaíso–Santiago railway
Triple: [Valparaíso Metro, followsRouteOf, former Valparaíso–Santiago railway]
Generated description
The former Valparaíso–Santiago railway was a historic Chilean rail line that once connected the coastal city of Valparaíso with the capital Santiago, serving as a key transportation corridor across central Chile.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: former Valparaíso–Santiago railway
Target entity description: The former Valparaíso–Santiago railway was a historic Chilean rail line that once connected the coastal city of Valparaíso with the capital Santiago, serving as a key transportation corridor across central Chile.
  • A. Antofagasta–Bolivia Railway
    The Antofagasta–Bolivia Railway is a historic trans-Andean rail line linking Chile’s Pacific coast with Bolivia’s interior, primarily built to transport minerals from the Andean region to port.
  • B. Chile rail network
    The Chile rail network is the national railway system of Chile, comprising passenger and freight lines that connect major cities and regions along the country’s long north–south axis.
  • C. Chepe railway
    The Chepe railway is a scenic passenger train route in northern Mexico that traverses the dramatic landscapes and deep gorges of the Copper Canyon.
  • D. Ferrocarril Central Andino
    Ferrocarril Central Andino is a major Peruvian railway line that crosses the Andes, historically known for being one of the highest standard-gauge railways in the world and a key link between Lima and the country’s central highlands.
  • E. Arica–La Paz Railway
    The Arica–La Paz Railway is a historic trans-Andean rail line connecting the Chilean port city of Arica with Bolivia’s capital, La Paz, primarily built to facilitate Bolivian access to the Pacific Ocean.
  • 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_69aed95785788190ae75bcf0cd1cafdf completed March 9, 2026, 2:29 p.m.
NER Named-entity recognition batch_69af024cc7e88190b23b39d6f5f2a2e0 completed March 9, 2026, 5:24 p.m.
NED1 Entity disambiguation (via context triple) batch_69b576cff6c881909134804ba6f9876d completed March 14, 2026, 2:55 p.m.
NEDg Description generation batch_69b577d391ac8190b6062b1f64e2e7e8 completed March 14, 2026, 2:59 p.m.
NED2 Entity disambiguation (via description) batch_69b5787ed214819092fc425152069df9 completed March 14, 2026, 3:02 p.m.
Created at: March 9, 2026, 3:43 p.m.