Triple

T5218025
Position Surface form Disambiguated ID Type / Status
Subject İzmit E117800 entity
Predicate locatedOnRailway P848 FINISHED
Object Istanbul–Ankara railway
The Istanbul–Ankara railway is a major rail corridor in Turkey that connects the country’s largest city, Istanbul, with its capital, Ankara, serving as a key route for both passenger and freight transport.
E502774 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: Istanbul–Ankara railway | Statement: [İzmit, locatedOnRailway, Istanbul–Ankara railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Istanbul–Ankara railway
Context triple: [İzmit, locatedOnRailway, Istanbul–Ankara railway]
  • A. Ankara–Konya high-speed railway
    The Ankara–Konya high-speed railway is a major Turkish high-speed rail corridor connecting the capital Ankara with the central Anatolian city of Konya, significantly reducing travel times between the two.
  • B. Northern Marmara Motorway
    The Northern Marmara Motorway is a major Turkish highway encircling Istanbul on the northern side, designed to ease traffic congestion and improve transit between Europe and Asia.
  • C. Marmaray rail tunnel
    The Marmaray rail tunnel is an undersea railway tunnel in Istanbul that connects the European and Asian sides of the city beneath the Bosporus Strait.
  • D. Ankara Metro
    Ankara Metro is the rapid transit system serving Turkey's capital city, providing urban rail transportation across Ankara and its surrounding districts.
  • E. Konya–Istanbul high-speed railway connection
    The Konya–Istanbul high-speed railway connection is a major Turkish high-speed rail corridor linking the central Anatolian city of Konya with Istanbul, significantly reducing travel times between the two economic and cultural hubs.
  • 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: Istanbul–Ankara railway
Triple: [İzmit, locatedOnRailway, Istanbul–Ankara railway]
Generated description
The Istanbul–Ankara railway is a major rail corridor in Turkey that connects the country’s largest city, Istanbul, with its capital, Ankara, serving as a key route for both passenger and freight transport.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Istanbul–Ankara railway
Target entity description: The Istanbul–Ankara railway is a major rail corridor in Turkey that connects the country’s largest city, Istanbul, with its capital, Ankara, serving as a key route for both passenger and freight transport.
  • A. Ankara–Konya high-speed railway
    The Ankara–Konya high-speed railway is a major Turkish high-speed rail corridor connecting the capital Ankara with the central Anatolian city of Konya, significantly reducing travel times between the two.
  • B. Northern Marmara Motorway
    The Northern Marmara Motorway is a major Turkish highway encircling Istanbul on the northern side, designed to ease traffic congestion and improve transit between Europe and Asia.
  • C. Marmaray rail tunnel
    The Marmaray rail tunnel is an undersea railway tunnel in Istanbul that connects the European and Asian sides of the city beneath the Bosporus Strait.
  • D. Ankara Metro
    Ankara Metro is the rapid transit system serving Turkey's capital city, providing urban rail transportation across Ankara and its surrounding districts.
  • E. Konya–Istanbul high-speed railway connection
    The Konya–Istanbul high-speed railway connection is a major Turkish high-speed rail corridor linking the central Anatolian city of Konya with Istanbul, significantly reducing travel times between the two economic and cultural hubs.
  • 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_69bd4465e03081909bfcfd7113062590 completed March 20, 2026, 12:58 p.m.
NER Named-entity recognition batch_69bd7a96d49c8190a58726a57edebdcc completed March 20, 2026, 4:49 p.m.
NED1 Entity disambiguation (via context triple) batch_69beefebe3b081909f3fe50cf3d73653 completed March 21, 2026, 7:22 p.m.
NEDg Description generation batch_69bef0bfd76c8190ab48fed23b21c70b completed March 21, 2026, 7:25 p.m.
NED2 Entity disambiguation (via description) batch_69bef168c2088190bba7fce5219b0d1f completed March 21, 2026, 7:28 p.m.
Created at: March 20, 2026, 1:48 p.m.