Triple

T1505651
Position Surface form Disambiguated ID Type / Status
Subject MBTA Silver Hill station E33893 entity
Predicate isPartOf P10 FINISHED
Object Fitchburg Line stations
Fitchburg Line stations are the commuter rail stops served by the MBTA’s Fitchburg Line running between Boston and communities to its northwest.
 E172534 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: Fitchburg Line stations | Statement: [MBTA Silver Hill station, isPartOf, Fitchburg Line stations]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Fitchburg Line stations
Context triple: [MBTA Silver Hill station, isPartOf, Fitchburg Line stations]
  • A. Malden Center station
    Malden Center station is a major transit hub in Malden, Massachusetts, serving both MBTA Orange Line subway and commuter rail services.
  • B. Vermont/Beverly station
    Vermont/Beverly station is an underground rapid transit stop on Los Angeles Metro's B Line serving the Koreatown area.
  • C. Porter station
    Porter station is a major MBTA transit hub in Cambridge, Massachusetts, serving both Red Line subway and commuter rail trains beneath Porter Square.
  • D. Quincy Center station
    Quincy Center station is a major MBTA Red Line rapid transit and commuter rail hub located in downtown Quincy, Massachusetts.
  • E. Northeastern University station
    Northeastern University station is a light rail stop on Boston’s MBTA Green Line serving the Northeastern University campus and the surrounding Fenway–Kenmore 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: Fitchburg Line stations
Triple: [MBTA Silver Hill station, isPartOf, Fitchburg Line stations]
Generated description
Fitchburg Line stations are the commuter rail stops served by the MBTA’s Fitchburg Line running between Boston and communities to its northwest.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Fitchburg Line stations
Target entity description: Fitchburg Line stations are the commuter rail stops served by the MBTA’s Fitchburg Line running between Boston and communities to its northwest.
  • A. Malden Center station
    Malden Center station is a major transit hub in Malden, Massachusetts, serving both MBTA Orange Line subway and commuter rail services.
  • B. Vermont/Beverly station
    Vermont/Beverly station is an underground rapid transit stop on Los Angeles Metro's B Line serving the Koreatown area.
  • C. Porter station
    Porter station is a major MBTA transit hub in Cambridge, Massachusetts, serving both Red Line subway and commuter rail trains beneath Porter Square.
  • D. Quincy Center station
    Quincy Center station is a major MBTA Red Line rapid transit and commuter rail hub located in downtown Quincy, Massachusetts.
  • E. Northeastern University station
    Northeastern University station is a light rail stop on Boston’s MBTA Green Line serving the Northeastern University campus and the surrounding Fenway–Kenmore 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_69a885f352a4819099b24ff15489dede completed March 4, 2026, 7:20 p.m.
NER Named-entity recognition batch_69a88734508481909378bb3e86e13323 completed March 4, 2026, 7:25 p.m.
NED1 Entity disambiguation (via context triple) batch_69ad2336cb4c81909df0cae469673dee completed March 8, 2026, 7:20 a.m.
NEDg Description generation batch_69ad247fa1c08190878ce0d0a9ea45db completed March 8, 2026, 7:25 a.m.
NED2 Entity disambiguation (via description) batch_69ad24d599b08190ad26351c7614634d completed March 8, 2026, 7:27 a.m.
Created at: March 4, 2026, 7:24 p.m.