Triple

T9271022
Position Surface form Disambiguated ID Type / Status
Subject Lowell Line E222827 entity
Predicate usesStation P726 FINISHED
Object Haverhill Line connection at Wilmington Junction
The Haverhill Line connection at Wilmington Junction is a rail junction in Massachusetts where MBTA commuter rail tracks from the Lowell Line link to the Haverhill Line, enabling route flexibility and service diversions.
E789074 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: Haverhill Line connection at Wilmington Junction | Statement: [Lowell Line, usesStation, Haverhill Line connection at Wilmington Junction]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Haverhill Line connection at Wilmington Junction
Context triple: [Lowell Line, usesStation, Haverhill Line connection at Wilmington Junction]
  • A. Thetford–Ely line
    The Thetford–Ely line is a rural railway route in eastern England linking the towns of Thetford and Ely and serving intermediate stations such as Shippea Hill.
  • B. Cambridge Line between Hitchin and Cambridge
    The Cambridge Line between Hitchin and Cambridge is a key section of the rail network in eastern England, linking the East Coast Main Line to the city of Cambridge and serving both regional and long-distance passenger services.
  • C. Northampton Loop Line
    The Northampton Loop Line is a railway branch of the West Coast Main Line in England that diverts via Northampton, providing passenger and freight services between Rugby and Milton Keynes.
  • D. Ipswich line
    The Ipswich line is a suburban railway line in Brisbane, Queensland, connecting the city centre with the western suburbs and the city of Ipswich.
  • E. Norwich–Lowestoft line
    The Norwich–Lowestoft line is a regional railway route in East Anglia, England, connecting the city of Norwich with the coastal town of Lowestoft and serving communities across Norfolk and Suffolk.
  • 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: Haverhill Line connection at Wilmington Junction
Triple: [Lowell Line, usesStation, Haverhill Line connection at Wilmington Junction]
Generated description
The Haverhill Line connection at Wilmington Junction is a rail junction in Massachusetts where MBTA commuter rail tracks from the Lowell Line link to the Haverhill Line, enabling route flexibility and service diversions.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Haverhill Line connection at Wilmington Junction
Target entity description: The Haverhill Line connection at Wilmington Junction is a rail junction in Massachusetts where MBTA commuter rail tracks from the Lowell Line link to the Haverhill Line, enabling route flexibility and service diversions.
  • A. Thetford–Ely line
    The Thetford–Ely line is a rural railway route in eastern England linking the towns of Thetford and Ely and serving intermediate stations such as Shippea Hill.
  • B. Cambridge Line between Hitchin and Cambridge
    The Cambridge Line between Hitchin and Cambridge is a key section of the rail network in eastern England, linking the East Coast Main Line to the city of Cambridge and serving both regional and long-distance passenger services.
  • C. Northampton Loop Line
    The Northampton Loop Line is a railway branch of the West Coast Main Line in England that diverts via Northampton, providing passenger and freight services between Rugby and Milton Keynes.
  • D. Ipswich line
    The Ipswich line is a suburban railway line in Brisbane, Queensland, connecting the city centre with the western suburbs and the city of Ipswich.
  • E. Norwich–Lowestoft line
    The Norwich–Lowestoft line is a regional railway route in East Anglia, England, connecting the city of Norwich with the coastal town of Lowestoft and serving communities across Norfolk and Suffolk.
  • 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_69ca841ffe208190aa7bcffbef2f8379 completed March 30, 2026, 2:09 p.m.
NER Named-entity recognition batch_69cd07865790819099b3865a25dae58a completed April 1, 2026, 11:54 a.m.
NED1 Entity disambiguation (via context triple) batch_69d09c2ca500819083ef4aa37f3e3a7f completed April 4, 2026, 5:05 a.m.
NEDg Description generation batch_69d09d5047e8819082dbb2e44547b41c completed April 4, 2026, 5:10 a.m.
NED2 Entity disambiguation (via description) batch_69d09dec544c819095e2109d5e1671d3 completed April 4, 2026, 5:13 a.m.
Created at: March 30, 2026, 7:33 p.m.