Triple

T16736184
Position Surface form Disambiguated ID Type / Status
Subject Bangor and Aroostook Railroad E406723 entity
Predicate successor P78 FINISHED
Object Montreal, Maine and Atlantic Railway
The Montreal, Maine and Atlantic Railway was a regional freight railroad operating in the northeastern United States and Quebec, best known for its involvement in the 2013 Lac-Mégantic rail disaster.
E1231019 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: Montreal, Maine and Atlantic Railway | Statement: [Bangor and Aroostook Railroad, successor, Montreal, Maine and Atlantic Railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Montreal, Maine and Atlantic Railway
Context triple: [Bangor and Aroostook Railroad, successor, Montreal, Maine and Atlantic Railway]
  • A. Quebec North Shore and Labrador Railway
    The Quebec North Shore and Labrador Railway is a Canadian heavy freight railway primarily used to transport iron ore from mines in northeastern Quebec and western Labrador to ports on the St. Lawrence River.
  • B. St. Lawrence and Atlantic Railroad
    The St. Lawrence and Atlantic Railroad is a regional rail line in the northeastern United States and Canada that provides freight transportation across parts of Maine, New Hampshire, Vermont, and Quebec.
  • C. Cape Breton and Central Nova Scotia Railway
    The Cape Breton and Central Nova Scotia Railway is a regional shortline railway in Nova Scotia, Canada, that provides freight service across the province including the link to Cape Breton Island.
  • D. New Brunswick Railway Company
    The New Brunswick Railway Company is a Canadian transportation and land-holding firm historically involved in rail operations in New Brunswick and now part of the diversified conglomerate J.D. Irving, Limited.
  • E. Intercolonial Railway of Canada
    The Intercolonial Railway of Canada was a government-owned railway that linked the Maritime provinces with central Canada and played a key role in the country’s early national transportation network.
  • 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: Montreal, Maine and Atlantic Railway
Triple: [Bangor and Aroostook Railroad, successor, Montreal, Maine and Atlantic Railway]
Generated description
The Montreal, Maine and Atlantic Railway was a regional freight railroad operating in the northeastern United States and Quebec, best known for its involvement in the 2013 Lac-Mégantic rail disaster.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Montreal, Maine and Atlantic Railway
Target entity description: The Montreal, Maine and Atlantic Railway was a regional freight railroad operating in the northeastern United States and Quebec, best known for its involvement in the 2013 Lac-Mégantic rail disaster.
  • A. Quebec North Shore and Labrador Railway
    The Quebec North Shore and Labrador Railway is a Canadian heavy freight railway primarily used to transport iron ore from mines in northeastern Quebec and western Labrador to ports on the St. Lawrence River.
  • B. St. Lawrence and Atlantic Railroad
    The St. Lawrence and Atlantic Railroad is a regional rail line in the northeastern United States and Canada that provides freight transportation across parts of Maine, New Hampshire, Vermont, and Quebec.
  • C. Cape Breton and Central Nova Scotia Railway
    The Cape Breton and Central Nova Scotia Railway is a regional shortline railway in Nova Scotia, Canada, that provides freight service across the province including the link to Cape Breton Island.
  • D. New Brunswick Railway Company
    The New Brunswick Railway Company is a Canadian transportation and land-holding firm historically involved in rail operations in New Brunswick and now part of the diversified conglomerate J.D. Irving, Limited.
  • E. Intercolonial Railway of Canada
    The Intercolonial Railway of Canada was a government-owned railway that linked the Maritime provinces with central Canada and played a key role in the country’s early national transportation network.
  • 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_69d8838ffb088190a0b11149929006bf completed April 10, 2026, 4:58 a.m.
NER Named-entity recognition batch_69e39c3a86848190a03f243dd1bdb899 completed April 18, 2026, 2:59 p.m.
NED1 Entity disambiguation (via context triple) batch_6a009d4ea8208190aed0a4014a10d120 completed May 10, 2026, 2:59 p.m.
NEDg Description generation batch_6a009ed297488190a20558efb9f91a55 completed May 10, 2026, 3:05 p.m.
NED2 Entity disambiguation (via description) batch_6a009f460010819086cfd7a7d74cb435 completed May 10, 2026, 3:07 p.m.
Created at: April 10, 2026, 5:20 a.m.