Triple

T5445474
Position Surface form Disambiguated ID Type / Status
Subject Kanpur Central railway station E122237 entity
Predicate isMajorJunctionOnLine P64350 FINISHED
Object Howrah–Delhi main line
The Howrah–Delhi main line is one of India's busiest and most important railway corridors, connecting Kolkata (Howrah) with the national capital New Delhi and passing through major cities across northern and eastern India.
E520995 NE FINISHED

How this triple was built (5 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: Howrah–Delhi main line | Statement: [Kanpur Central railway station, isMajorJunctionOnLine, Howrah–Delhi main line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Howrah–Delhi main line
Context triple: [Kanpur Central railway station, isMajorJunctionOnLine, Howrah–Delhi main line]
  • A. Howrah–Bardhaman main line
    The Howrah–Bardhaman main line is a major suburban and long-distance railway corridor in West Bengal, India, connecting Howrah (Kolkata) with Bardhaman and serving numerous important towns along the route.
  • B. Howrah–New Jalpaiguri line
    The Howrah–New Jalpaiguri line is a major railway route in the Indian state of West Bengal that connects Kolkata’s Howrah station with New Jalpaiguri, serving as a key corridor between southern and northern Bengal.
  • C. Howrah–Nagpur–Mumbai line
    The Howrah–Nagpur–Mumbai line is a major Indian Railways trunk route connecting Kolkata (Howrah) in the east with Mumbai in the west via Nagpur, serving as a key corridor for both passenger and freight traffic across central India.
  • D. Delhi–Ambala railway line
    The Delhi–Ambala railway line is a key rail corridor in northern India connecting the national capital Delhi with the city of Ambala, serving major towns and districts along its route.
  • E. Delhi–Jammu Tawi line
    The Delhi–Jammu Tawi line is a key Indian Railways route connecting the national capital Delhi with the city of Jammu, serving as a major passenger and strategic corridor in North India.
  • 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: Howrah–Delhi main line
Triple: [Kanpur Central railway station, isMajorJunctionOnLine, Howrah–Delhi main line]
Generated description
The Howrah–Delhi main line is one of India's busiest and most important railway corridors, connecting Kolkata (Howrah) with the national capital New Delhi and passing through major cities across northern and eastern India.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Howrah–Delhi main line
Target entity description: The Howrah–Delhi main line is one of India's busiest and most important railway corridors, connecting Kolkata (Howrah) with the national capital New Delhi and passing through major cities across northern and eastern India.
  • A. Howrah–Bardhaman main line
    The Howrah–Bardhaman main line is a major suburban and long-distance railway corridor in West Bengal, India, connecting Howrah (Kolkata) with Bardhaman and serving numerous important towns along the route.
  • B. Howrah–New Jalpaiguri line
    The Howrah–New Jalpaiguri line is a major railway route in the Indian state of West Bengal that connects Kolkata’s Howrah station with New Jalpaiguri, serving as a key corridor between southern and northern Bengal.
  • C. Howrah–Nagpur–Mumbai line
    The Howrah–Nagpur–Mumbai line is a major Indian Railways trunk route connecting Kolkata (Howrah) in the east with Mumbai in the west via Nagpur, serving as a key corridor for both passenger and freight traffic across central India.
  • D. Delhi–Ambala railway line
    The Delhi–Ambala railway line is a key rail corridor in northern India connecting the national capital Delhi with the city of Ambala, serving major towns and districts along its route.
  • E. Delhi–Jammu Tawi line
    The Delhi–Jammu Tawi line is a key Indian Railways route connecting the national capital Delhi with the city of Jammu, serving as a major passenger and strategic corridor in North India.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: isMajorJunctionOnLine
Context triple: [Kanpur Central railway station, isMajorJunctionOnLine, Howrah–Delhi main line]
  • A. isMajorRoadJunction
    Indicates that a location serves as a primary intersection where major roads or highways meet or cross.
  • B. isNumberedJunctionOf
    Indicates that a junction (such as a road or rail intersection) has been assigned an official identifying number within a network.
  • C. isMajorInterchangeFor
    Indicates that one location functions as a primary hub where multiple routes or lines connect or transfer between each other for another location.
  • D. isMajorRoadIn
    Indicates that a road is classified as a major road within a specified geographic area or jurisdiction.
  • E. hasJunctionNumber
    Indicates that a road, route, or similar pathway is assigned a specific junction or exit number.
  • F. None of above. chosen

Provenance (7 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_69bd4640f52c81909e653ec361f66d76 completed March 20, 2026, 1:06 p.m.
NER Named-entity recognition batch_69bd95be329c81908783420cf81b6af5 completed March 20, 2026, 6:45 p.m.
NED1 Entity disambiguation (via context triple) batch_69bf413573c08190beae400c485d2132 completed March 22, 2026, 1:09 a.m.
NEDg Description generation batch_69bf4364b2f48190b69cc27ca6900892 completed March 22, 2026, 1:18 a.m.
NED2 Entity disambiguation (via description) batch_69bf43b523a88190938662ae89eba502 completed March 22, 2026, 1:19 a.m.
PD Predicate disambiguation batch_69bd919e8d18819098c4af6a015e5cc2 completed March 20, 2026, 6:27 p.m.
PDg Predicate description generation batch_69bd95bd53f48190a03144beb290f2cb completed March 20, 2026, 6:45 p.m.
Created at: March 20, 2026, 2:07 p.m.