Triple

T3502
Position Surface form Disambiguated ID Type / Status
Subject MBTA Fitchburg Line E65 entity
Predicate hasStation P35 FINISHED
Object South Acton
South Acton is a commuter rail station in Acton, Massachusetts, serving as a key stop on the MBTA’s Fitchburg Line between Boston and communities to the northwest.
E825 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: South Acton | Statement: [MBTA Fitchburg Line, hasStation, South Acton]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: South Acton
Context triple: [MBTA Fitchburg Line, hasStation, South Acton]
  • A. Oxford Road campus
    Oxford Road campus is the principal site of the University of Manchester, housing many of its academic buildings, libraries, and student facilities along Oxford Road in Manchester, England.
  • B. Cambridge, England
    Cambridge, England is a historic university city on the River Cam renowned for the University of Cambridge and its longstanding contributions to education, science, and culture.
  • C. Longwood Medical Area
    Longwood Medical Area is a major medical and academic district in Boston known for its concentration of world-renowned hospitals, research institutions, and health sciences schools.
  • D. Chocolate City
    Chocolate City is a popular nickname for Washington, D.C., highlighting its historically large and influential African American population and culture.
  • E. Lynn
    Lynn is a coastal city in northeastern Massachusetts, known as one of the larger urban centers in the Greater Boston metropolitan area.
  • 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: South Acton
Triple: [MBTA Fitchburg Line, hasStation, South Acton]
Generated description
South Acton is a commuter rail station in Acton, Massachusetts, serving as a key stop on the MBTA’s Fitchburg Line between Boston and communities to the northwest.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: South Acton
Target entity description: South Acton is a commuter rail station in Acton, Massachusetts, serving as a key stop on the MBTA’s Fitchburg Line between Boston and communities to the northwest.
  • A. Oxford Road campus
    Oxford Road campus is the principal site of the University of Manchester, housing many of its academic buildings, libraries, and student facilities along Oxford Road in Manchester, England.
  • B. Cambridge, England
    Cambridge, England is a historic university city on the River Cam renowned for the University of Cambridge and its longstanding contributions to education, science, and culture.
  • C. Longwood Medical Area
    Longwood Medical Area is a major medical and academic district in Boston known for its concentration of world-renowned hospitals, research institutions, and health sciences schools.
  • D. Chocolate City
    Chocolate City is a popular nickname for Washington, D.C., highlighting its historically large and influential African American population and culture.
  • E. Lynn
    Lynn is a coastal city in northeastern Massachusetts, known as one of the larger urban centers in the Greater Boston metropolitan area.
  • 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_69a238d6b47881909e68288aed2fd858 completed Feb. 28, 2026, 12:37 a.m.
NER Named-entity recognition batch_69a23ff0650c8190bea8724de0343e58 completed Feb. 28, 2026, 1:08 a.m.
NED1 Entity disambiguation (via context triple) batch_69a243c57fe481909b6c1b8f41757f96 completed Feb. 28, 2026, 1:24 a.m.
NEDg Description generation batch_69a2463a71188190a7252fae85f68711 completed Feb. 28, 2026, 1:34 a.m.
NED2 Entity disambiguation (via description) batch_69a246e74bfc8190ba3ea9818a55cc28 completed Feb. 28, 2026, 1:37 a.m.
Created at: Feb. 28, 2026, 12:40 a.m.