Triple

T346636
Position Surface form Disambiguated ID Type / Status
Subject Meriden, Connecticut E6956 entity
Predicate hasRailService P782 FINISHED
Object CTrail Hartford Line
CTrail Hartford Line is a commuter rail service in Connecticut that connects New Haven, Hartford, and Springfield, providing regional passenger transportation along the I‑91 corridor.
 E43932 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: CTrail Hartford Line | Statement: [Meriden, Connecticut, hasRailService, CTrail Hartford Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: CTrail Hartford Line
Context triple: [Meriden, Connecticut, hasRailService, CTrail Hartford Line]
  • A. White Plains Road Line
    The White Plains Road Line is a major New York City Subway route in the Bronx, primarily served by the 2 and 5 trains and running along White Plains Road.
  • B. Trenton Line
    Trenton Line is a commuter rail service in the Philadelphia region operated by SEPTA Regional Rail, connecting Center City Philadelphia with Trenton, New Jersey.
  • C. Pelham Line
    The Pelham Line is a New York City Subway route in the Bronx and Manhattan, operated by the IRT division and primarily served by the 6 train.
  • D. West Trenton Line
    The West Trenton Line is a commuter rail service in the Philadelphia region that connects Center City to West Trenton, New Jersey, as part of SEPTA's Regional Rail network.
  • E. Camden Line
    The Camden Line is a commuter rail service in Maryland that connects Washington, D.C. with Baltimore and surrounding communities as part of the MARC Train system.
  • 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: CTrail Hartford Line
Triple: [Meriden, Connecticut, hasRailService, CTrail Hartford Line]
Generated description
CTrail Hartford Line is a commuter rail service in Connecticut that connects New Haven, Hartford, and Springfield, providing regional passenger transportation along the I‑91 corridor.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: CTrail Hartford Line
Target entity description: CTrail Hartford Line is a commuter rail service in Connecticut that connects New Haven, Hartford, and Springfield, providing regional passenger transportation along the I‑91 corridor.
  • A. White Plains Road Line
    The White Plains Road Line is a major New York City Subway route in the Bronx, primarily served by the 2 and 5 trains and running along White Plains Road.
  • B. Trenton Line
    Trenton Line is a commuter rail service in the Philadelphia region operated by SEPTA Regional Rail, connecting Center City Philadelphia with Trenton, New Jersey.
  • C. Pelham Line
    The Pelham Line is a New York City Subway route in the Bronx and Manhattan, operated by the IRT division and primarily served by the 6 train.
  • D. West Trenton Line
    The West Trenton Line is a commuter rail service in the Philadelphia region that connects Center City to West Trenton, New Jersey, as part of SEPTA's Regional Rail network.
  • E. Camden Line
    The Camden Line is a commuter rail service in Maryland that connects Washington, D.C. with Baltimore and surrounding communities as part of the MARC Train system.
  • 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_69a2e7951ba08190960e90823b5078f3 completed Feb. 28, 2026, 1:03 p.m.
NER Named-entity recognition batch_69a2ee043fac8190af72291c04761687 completed Feb. 28, 2026, 1:30 p.m.
NED1 Entity disambiguation (via context triple) batch_69a3d7eb6b708190b0dff991c101104f completed March 1, 2026, 6:08 a.m.
NEDg Description generation batch_69a3d85312448190aad22189ad07687a completed March 1, 2026, 6:10 a.m.
NED2 Entity disambiguation (via description) batch_69a3d8f2d0688190aa6d0a262f8857ba completed March 1, 2026, 6:13 a.m.
Created at: Feb. 28, 2026, 1:08 p.m.