Triple

T15136565
Position Surface form Disambiguated ID Type / Status
Subject Tehran–Tabriz railway E361569 entity
Predicate operator P179 FINISHED
Object Islamic Republic of Iran Railways E499639 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: Islamic Republic of Iran Railways | Statement: [Tehran–Tabriz railway, operator, Islamic Republic of Iran Railways]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Islamic Republic of Iran Railways
Context triple: [Tehran–Tabriz railway, operator, Islamic Republic of Iran Railways]
  • A. Islamic Republic of Iran Railways chosen
    Islamic Republic of Iran Railways is Iran’s state-owned national railway company responsible for operating and managing the country’s rail transport network.
  • B. Tehran Urban and Suburban Railway and Bus Company
    Tehran Urban and Suburban Railway and Bus Company is the municipal public transport operator responsible for managing Tehran’s metro and bus systems, including the city’s Bus Rapid Transit network.
  • C. Iranian railway network
    The Iranian railway network is a nationwide rail transport system that connects major cities, industrial centers, and border crossings across Iran and links the country to regional and international rail corridors.
  • D. Tehran–IKIA railway connection
    The Tehran–IKIA railway connection is a rail link that connects central Tehran with Imam Khomeini International Airport, providing a direct public transit option for air travelers.
  • E. Tehran–Mashhad railway
    The Tehran–Mashhad railway is a major Iranian rail line connecting the capital Tehran with the holy city of Mashhad, serving as one of the country’s busiest passenger and freight corridors.
  • 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_69d85a06450081909c5a14ea9851a15e completed April 10, 2026, 2:01 a.m.
NER Named-entity recognition batch_69e005b3f6f48190b1ed7c7b28feb7a6 completed April 15, 2026, 9:40 p.m.
NED1 Entity disambiguation (via context triple) batch_69fec88096f081908897fd1c5362c274 completed May 9, 2026, 5:39 a.m.
Created at: April 10, 2026, 3:07 a.m.