Triple

T3975619
Position Surface form Disambiguated ID Type / Status
Subject Maine Central Railroad E85633 entity
Predicate notableRoute P22 FINISHED
Object Portland–Bangor main line
The Portland–Bangor main line is a principal railroad corridor in Maine that historically connected the state’s largest city, Portland, with the central and northern regions around Bangor, serving as a key route for both passenger and freight traffic.
E85633 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: Portland–Bangor main line | Statement: [Maine Central Railroad, notableRoute, Portland–Bangor main line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Portland–Bangor main line
Context triple: [Maine Central Railroad, notableRoute, Portland–Bangor main line]
  • A. Boston–Portland main line
    The Boston–Portland main line is a historic New England railroad corridor connecting Boston, Massachusetts, with Portland, Maine, that has long served as a key passenger and freight route along the region’s coast.
  • B. Boston–Maine rail network
    The Boston–Maine rail network was a regional railroad system in New England that connected major cities and towns, notably linking Boston with communities throughout Maine and neighboring states.
  • C. Maine Central Railroad
    Maine Central Railroad was a major New England railroad that operated extensive freight and passenger services across Maine and neighboring states from the 19th through the 20th century.
  • D. Providence/Stoughton Line
    The Providence/Stoughton Line is a Massachusetts Bay Transportation Authority commuter rail route connecting Boston with Providence, Rhode Island and Stoughton, Massachusetts.
  • E. Fitchburg Line
    The Fitchburg Line is a commuter rail service operated by the Massachusetts Bay Transportation Authority (MBTA) that runs between Boston and the city of Fitchburg in Massachusetts.
  • 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: Portland–Bangor main line
Triple: [Maine Central Railroad, notableRoute, Portland–Bangor main line]
Generated description
The Portland–Bangor main line is a principal railroad corridor in Maine that historically connected the state’s largest city, Portland, with the central and northern regions around Bangor, serving as a key route for both passenger and freight traffic.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Portland–Bangor main line
Target entity description: The Portland–Bangor main line is a principal railroad corridor in Maine that historically connected the state’s largest city, Portland, with the central and northern regions around Bangor, serving as a key route for both passenger and freight traffic.
  • A. Boston–Portland main line
    The Boston–Portland main line is a historic New England railroad corridor connecting Boston, Massachusetts, with Portland, Maine, that has long served as a key passenger and freight route along the region’s coast.
  • B. Boston–Maine rail network
    The Boston–Maine rail network was a regional railroad system in New England that connected major cities and towns, notably linking Boston with communities throughout Maine and neighboring states.
  • C. Maine Central Railroad chosen
    Maine Central Railroad was a major New England railroad that operated extensive freight and passenger services across Maine and neighboring states from the 19th through the 20th century.
  • D. Providence/Stoughton Line
    The Providence/Stoughton Line is a Massachusetts Bay Transportation Authority commuter rail route connecting Boston with Providence, Rhode Island and Stoughton, Massachusetts.
  • E. Fitchburg Line
    The Fitchburg Line is a commuter rail service operated by the Massachusetts Bay Transportation Authority (MBTA) that runs between Boston and the city of Fitchburg in Massachusetts.
  • F. None of above.

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_69aed93908348190a26c8aaf4fab3e86 completed March 9, 2026, 2:29 p.m.
NER Named-entity recognition batch_69aef9b6d8008190822fceabe6542b3d completed March 9, 2026, 4:47 p.m.
NED1 Entity disambiguation (via context triple) batch_69b5401712188190aa6144dc1d5dcab6 completed March 14, 2026, 11:01 a.m.
NEDg Description generation batch_69b54411546481908627a8b3ce7a433a completed March 14, 2026, 11:18 a.m.
NED2 Entity disambiguation (via description) batch_69b544a02d5c8190a76a074cc7e98cc5 completed March 14, 2026, 11:21 a.m.
Created at: March 9, 2026, 3:33 p.m.