Triple

T3477973
Position Surface form Disambiguated ID Type / Status
Subject Qazvin E73419 entity
Predicate connectedBy P37 FINISHED
Object Tehran–Tabriz railway
The Tehran–Tabriz railway is a major rail line in Iran that links the capital Tehran with the northwestern city of Tabriz, serving as a key corridor for passenger and freight transport across the country.
E361569 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: Tehran–Tabriz railway | Statement: [Qazvin, connectedBy, Tehran–Tabriz railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Tehran–Tabriz railway
Context triple: [Qazvin, connectedBy, Tehran–Tabriz railway]
  • A. Trans-Iranian Railway
    The Trans-Iranian Railway is a historic north–south rail line completed in the 1930s that links the Persian Gulf to the Caspian Sea, playing a crucial role in Iran’s transportation network and in Allied logistics during World War II.
  • B. Tehran–Karaj corridor
    The Tehran–Karaj corridor is a major urban and transportation axis linking Iran’s capital Tehran with the nearby city of Karaj, forming one of the country’s most densely populated and heavily traveled metropolitan regions.
  • C. Trans-Caspian Railway
    The Trans-Caspian Railway is a historic rail line in Central Asia that formed a key part of the Russian Empire’s and later the Soviet Union’s transportation network across the region.
  • D. Tehran–Mashhad highway
    The Tehran–Mashhad highway is a major Iranian roadway linking the capital Tehran with the northeastern city of Mashhad, serving as a key route for both domestic travel and religious pilgrimage.
  • E. Transcaucasian Railway
    The Transcaucasian Railway was a major railway network of the Russian Empire and later the Soviet Union that connected key cities and ports across the South Caucasus region.
  • 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: Tehran–Tabriz railway
Triple: [Qazvin, connectedBy, Tehran–Tabriz railway]
Generated description
The Tehran–Tabriz railway is a major rail line in Iran that links the capital Tehran with the northwestern city of Tabriz, serving as a key corridor for passenger and freight transport across the country.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Tehran–Tabriz railway
Target entity description: The Tehran–Tabriz railway is a major rail line in Iran that links the capital Tehran with the northwestern city of Tabriz, serving as a key corridor for passenger and freight transport across the country.
  • A. Trans-Iranian Railway
    The Trans-Iranian Railway is a historic north–south rail line completed in the 1930s that links the Persian Gulf to the Caspian Sea, playing a crucial role in Iran’s transportation network and in Allied logistics during World War II.
  • B. Tehran–Karaj corridor
    The Tehran–Karaj corridor is a major urban and transportation axis linking Iran’s capital Tehran with the nearby city of Karaj, forming one of the country’s most densely populated and heavily traveled metropolitan regions.
  • C. Trans-Caspian Railway
    The Trans-Caspian Railway is a historic rail line in Central Asia that formed a key part of the Russian Empire’s and later the Soviet Union’s transportation network across the region.
  • D. Tehran–Mashhad highway
    The Tehran–Mashhad highway is a major Iranian roadway linking the capital Tehran with the northeastern city of Mashhad, serving as a key route for both domestic travel and religious pilgrimage.
  • E. Transcaucasian Railway
    The Transcaucasian Railway was a major railway network of the Russian Empire and later the Soviet Union that connected key cities and ports across the South Caucasus region.
  • 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_69ad85b3c9b08190857cae74c7f36da9 completed March 8, 2026, 2:20 p.m.
NER Named-entity recognition batch_69adbb5b7584819096eadd1c5268eab1 completed March 8, 2026, 6:09 p.m.
NED1 Entity disambiguation (via context triple) batch_69b3681822488190a9876a21236f9aa3 completed March 13, 2026, 1:27 a.m.
NEDg Description generation batch_69b368b4e504819094ca0adbdbe7bfd9 completed March 13, 2026, 1:30 a.m.
NED2 Entity disambiguation (via description) batch_69b3693a8d6481909dadce4ac6109ff3 completed March 13, 2026, 1:32 a.m.
Created at: March 8, 2026, 3:17 p.m.