Triple

T4282566
Position Surface form Disambiguated ID Type / Status
Subject Waterbury E97186 entity
Predicate railServedBy P782 FINISHED
Object Metro-North Railroad Waterbury Branch
The Metro-North Railroad Waterbury Branch is a commuter rail line in Connecticut that provides service between Waterbury and the New Haven Line, connecting the Naugatuck Valley to the broader Metro-North network.
E426341 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: Metro-North Railroad Waterbury Branch | Statement: [Waterbury, railServedBy, Metro-North Railroad Waterbury Branch]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Metro-North Railroad Waterbury Branch
Context triple: [Waterbury, railServedBy, Metro-North Railroad Waterbury Branch]
  • A. Metro-North Railroad New Canaan Branch
    The Metro-North Railroad New Canaan Branch is a commuter rail line in southwestern Connecticut that provides service between New Canaan and the New Haven Line main route into the New York City metropolitan area.
  • B. New Haven–Springfield Line
    The New Haven–Springfield Line is a key passenger rail corridor in the northeastern United States connecting New Haven, Connecticut, with Springfield, Massachusetts, and serving both intercity and commuter rail services.
  • C. New Haven Line
    The New Haven Line is a major commuter rail route in the northeastern United States that connects New York City with New Haven, Connecticut, serving numerous communities along the Long Island Sound corridor.
  • D. Danbury Branch (Metro-North Railroad)
    Danbury Branch (Metro-North Railroad) is a commuter rail line in southwestern Connecticut that connects the city of Danbury with the New Haven Line, providing passenger service to New York City and other regional destinations.
  • E. Metro-North Railroad Port Jervis Line
    The Metro-North Railroad Port Jervis Line is a commuter rail line in the New York metropolitan area that provides long-distance service between Port Jervis and Hoboken, New Jersey, with connections to New York City.
  • 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: Metro-North Railroad Waterbury Branch
Triple: [Waterbury, railServedBy, Metro-North Railroad Waterbury Branch]
Generated description
The Metro-North Railroad Waterbury Branch is a commuter rail line in Connecticut that provides service between Waterbury and the New Haven Line, connecting the Naugatuck Valley to the broader Metro-North network.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Metro-North Railroad Waterbury Branch
Target entity description: The Metro-North Railroad Waterbury Branch is a commuter rail line in Connecticut that provides service between Waterbury and the New Haven Line, connecting the Naugatuck Valley to the broader Metro-North network.
  • A. Metro-North Railroad New Canaan Branch
    The Metro-North Railroad New Canaan Branch is a commuter rail line in southwestern Connecticut that provides service between New Canaan and the New Haven Line main route into the New York City metropolitan area.
  • B. New Haven–Springfield Line
    The New Haven–Springfield Line is a key passenger rail corridor in the northeastern United States connecting New Haven, Connecticut, with Springfield, Massachusetts, and serving both intercity and commuter rail services.
  • C. New Haven Line
    The New Haven Line is a major commuter rail route in the northeastern United States that connects New York City with New Haven, Connecticut, serving numerous communities along the Long Island Sound corridor.
  • D. Danbury Branch (Metro-North Railroad)
    Danbury Branch (Metro-North Railroad) is a commuter rail line in southwestern Connecticut that connects the city of Danbury with the New Haven Line, providing passenger service to New York City and other regional destinations.
  • E. Metro-North Railroad Port Jervis Line
    The Metro-North Railroad Port Jervis Line is a commuter rail line in the New York metropolitan area that provides long-distance service between Port Jervis and Hoboken, New Jersey, with connections to New York City.
  • 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_69b3454595848190a0e6bbb6a2bea040 completed March 12, 2026, 10:59 p.m.
NER Named-entity recognition batch_69b3503a84548190989a96d1a30d6ef7 completed March 12, 2026, 11:46 p.m.
NED1 Entity disambiguation (via context triple) batch_69b5b7bec1a88190bd36ed6d48e1c94e completed March 14, 2026, 7:32 p.m.
NEDg Description generation batch_69b5b870a66c8190a59bfc0e99234596 completed March 14, 2026, 7:35 p.m.
NED2 Entity disambiguation (via description) batch_69b5b908fad88190846278c782a10cdb completed March 14, 2026, 7:37 p.m.
Created at: March 12, 2026, 11:07 p.m.