Triple

T14061647
Position Surface form Disambiguated ID Type / Status
Subject Sarakhs E338359 entity
Predicate isTerminusOf P388 FINISHED
Object Mashhad–Sarakhs railway
The Mashhad–Sarakhs railway is an international rail line in northeastern Iran that connects the city of Mashhad to the border town of Sarakhs, serving as a key transit route toward Turkmenistan and Central Asia.
 E1077988 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: Mashhad–Sarakhs railway | Statement: [Sarakhs, isTerminusOf, Mashhad–Sarakhs railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Mashhad–Sarakhs railway
Context triple: [Sarakhs, isTerminusOf, Mashhad–Sarakhs railway]
  • A. 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.
  • B. 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.
  • C. Tehran–Karaj suburban rail line
    The Tehran–Karaj suburban rail line is a key commuter railway service connecting Iran’s capital Tehran with the nearby city of Karaj, helping to handle heavy daily passenger traffic across the metropolitan corridor.
  • 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. 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.
  • 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: Mashhad–Sarakhs railway
Triple: [Sarakhs, isTerminusOf, Mashhad–Sarakhs railway]
Generated description
The Mashhad–Sarakhs railway is an international rail line in northeastern Iran that connects the city of Mashhad to the border town of Sarakhs, serving as a key transit route toward Turkmenistan and Central Asia.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Mashhad–Sarakhs railway
Target entity description: The Mashhad–Sarakhs railway is an international rail line in northeastern Iran that connects the city of Mashhad to the border town of Sarakhs, serving as a key transit route toward Turkmenistan and Central Asia.
  • A. 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.
  • B. 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.
  • C. Tehran–Karaj suburban rail line
    The Tehran–Karaj suburban rail line is a key commuter railway service connecting Iran’s capital Tehran with the nearby city of Karaj, helping to handle heavy daily passenger traffic across the metropolitan corridor.
  • 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. 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.
  • 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_69d81c67ba6c819091935650dfb3b895 completed April 9, 2026, 9:38 p.m.
NER Named-entity recognition batch_69de568876308190840361dcaf10bd45 completed April 14, 2026, 3 p.m.
NED1 Entity disambiguation (via context triple) batch_69fcb6654850819083262f3fb981eb1a completed May 7, 2026, 3:57 p.m.
NEDg Description generation batch_69fcc4fa09448190b662af829712e657 completed May 7, 2026, 4:59 p.m.
NED2 Entity disambiguation (via description) batch_69fcc5d162c081908750fed589ed2d69 completed May 7, 2026, 5:03 p.m.
Created at: April 9, 2026, 10:21 p.m.