Triple

T9389509
Position Surface form Disambiguated ID Type / Status
Subject Isthmus of Tehuantepec E225988 entity
Predicate crossedBy P416 FINISHED
Object Tehuantepec Railway
The Tehuantepec Railway is a rail line in southern Mexico that provides a key trans-isthmian transportation route linking the Gulf of Mexico with the Pacific Ocean.
E795749 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: Tehuantepec Railway | Statement: [Isthmus of Tehuantepec, crossedBy, Tehuantepec Railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Tehuantepec Railway
Context triple: [Isthmus of Tehuantepec, crossedBy, Tehuantepec Railway]
  • A. Ferrocarril Chihuahua al Pacífico
    Ferrocarril Chihuahua al Pacífico is a scenic Mexican railway line, commonly known as "El Chepe," that traverses the Sierra Madre Occidental and the Copper Canyon region.
  • B. Texas Mexican Railway
    Texas Mexican Railway is a regional railroad in Texas that historically provided freight and cross-border rail services between the United States and Mexico and later became part of the Kansas City Southern rail network.
  • 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. South Central Pacific and Mexican Railway
    The South Central Pacific and Mexican Railway was a 19th-century railroad enterprise involved in developing rail connections between the southwestern United States and Mexico.
  • E. Mexican railroads
    Mexican railroads comprise the national railway network of Mexico, historically vital for freight and passenger transport and now focused primarily on cargo services across the country and into the United States.
  • 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: Tehuantepec Railway
Triple: [Isthmus of Tehuantepec, crossedBy, Tehuantepec Railway]
Generated description
The Tehuantepec Railway is a rail line in southern Mexico that provides a key trans-isthmian transportation route linking the Gulf of Mexico with the Pacific Ocean.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Tehuantepec Railway
Target entity description: The Tehuantepec Railway is a rail line in southern Mexico that provides a key trans-isthmian transportation route linking the Gulf of Mexico with the Pacific Ocean.
  • A. Ferrocarril Chihuahua al Pacífico
    Ferrocarril Chihuahua al Pacífico is a scenic Mexican railway line, commonly known as "El Chepe," that traverses the Sierra Madre Occidental and the Copper Canyon region.
  • B. Texas Mexican Railway
    Texas Mexican Railway is a regional railroad in Texas that historically provided freight and cross-border rail services between the United States and Mexico and later became part of the Kansas City Southern rail network.
  • 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. South Central Pacific and Mexican Railway
    The South Central Pacific and Mexican Railway was a 19th-century railroad enterprise involved in developing rail connections between the southwestern United States and Mexico.
  • E. Mexican railroads
    Mexican railroads comprise the national railway network of Mexico, historically vital for freight and passenger transport and now focused primarily on cargo services across the country and into the United States.
  • 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_69ca842f7e3481908bf5bcf52e032dbd completed March 30, 2026, 2:09 p.m.
NER Named-entity recognition batch_69cd50d83c188190925c389dff1341b0 completed April 1, 2026, 5:07 p.m.
NED1 Entity disambiguation (via context triple) batch_69d100f86bac8190a26ab156f24455bb completed April 4, 2026, 12:15 p.m.
NEDg Description generation batch_69d10156670c8190b61ef6231c2e78d2 completed April 4, 2026, 12:17 p.m.
NED2 Entity disambiguation (via description) batch_69d10235f46c8190ba8eeb9382649f62 completed April 4, 2026, 12:21 p.m.
Created at: March 30, 2026, 7:45 p.m.