Triple

T7957262

Position	Surface form	Disambiguated ID	Type / Status
Subject	Kalyani	`E184770`	entity
Predicate	railwayLine	`P848`	FINISHED
Object	Sealdah–Kalyani line The Sealdah–Kalyani line is a suburban railway corridor in the Kolkata metropolitan area of West Bengal, India, connecting Sealdah station in central Kolkata with the town of Kalyani and serving daily commuter traffic.	`E702410`	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: Sealdah–Kalyani line | Statement: [Kalyani, railwayLine, Sealdah–Kalyani line]

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Sealdah–Kalyani line
Context triple: [Kalyani, railwayLine, Sealdah–Kalyani line]

A. Sealdah–Ranaghat line
The Sealdah–Ranaghat line is a major suburban railway corridor in the Kolkata metropolitan area of West Bengal, India, connecting Sealdah station with Ranaghat and serving numerous densely populated towns along the route.
B. Howrah–Tarakeswar line
The Howrah–Tarakeswar line is a suburban railway corridor in West Bengal, India, connecting Howrah with the temple town of Tarakeswar and forming part of the Kolkata Suburban Railway network.
C. Sealdah–Bangaon railway line
The Sealdah–Bangaon railway line is a suburban rail corridor in the Kolkata metropolitan area of West Bengal, India, connecting Sealdah station with Bangaon and serving numerous intermediate urban and suburban localities.
D. Sealdah–Hasnabad railway line
The Sealdah–Hasnabad railway line is a suburban rail corridor in the Kolkata metropolitan area of West Bengal, India, connecting Sealdah with Hasnabad and serving numerous intermediate stations including Dum Dum.
E. 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.
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: Sealdah–Kalyani line
Triple: [Kalyani, railwayLine, Sealdah–Kalyani line]

Generated description

The Sealdah–Kalyani line is a suburban railway corridor in the Kolkata metropolitan area of West Bengal, India, connecting Sealdah station in central Kolkata with the town of Kalyani and serving daily commuter traffic.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Sealdah–Kalyani line
Target entity description: The Sealdah–Kalyani line is a suburban railway corridor in the Kolkata metropolitan area of West Bengal, India, connecting Sealdah station in central Kolkata with the town of Kalyani and serving daily commuter traffic.

A. Sealdah–Ranaghat line
The Sealdah–Ranaghat line is a major suburban railway corridor in the Kolkata metropolitan area of West Bengal, India, connecting Sealdah station with Ranaghat and serving numerous densely populated towns along the route.
B. Howrah–Tarakeswar line
The Howrah–Tarakeswar line is a suburban railway corridor in West Bengal, India, connecting Howrah with the temple town of Tarakeswar and forming part of the Kolkata Suburban Railway network.
C. Sealdah–Bangaon railway line
The Sealdah–Bangaon railway line is a suburban rail corridor in the Kolkata metropolitan area of West Bengal, India, connecting Sealdah station with Bangaon and serving numerous intermediate urban and suburban localities.
D. Sealdah–Hasnabad railway line
The Sealdah–Hasnabad railway line is a suburban rail corridor in the Kolkata metropolitan area of West Bengal, India, connecting Sealdah with Hasnabad and serving numerous intermediate stations including Dum Dum.
E. 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.
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_69ca8292cba881908a64427b938dac47`	completed	March 30, 2026, 2:02 p.m.
NER	Named-entity recognition	`batch_69cb3b7d36c081908cc8760a0dbf6001`	completed	March 31, 2026, 3:11 a.m.
NED1	Entity disambiguation (via context triple)	`batch_69cbe072ef4c8190a8e078c5280913db`	completed	March 31, 2026, 2:55 p.m.
NEDg	Description generation	`batch_69cbe43a45b48190b2bdc793f2bd3264`	completed	March 31, 2026, 3:11 p.m.
NED2	Entity disambiguation (via description)	`batch_69cc11c673d88190b2796fb6efac6b09`	completed	March 31, 2026, 6:26 p.m.

Created at: March 30, 2026, 5:11 p.m.