Triple

T38437
Position Surface form Disambiguated ID Type / Status
Subject MBTA Red Line E761 entity
Predicate branch P889 FINISHED
Object Braintree branch
The Braintree branch is the southern extension of Boston’s MBTA Red Line that runs from JFK/UMass station through several South Shore communities to Braintree.
E3326 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: Braintree branch | Statement: [MBTA Red Line, branch, Braintree branch]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Braintree branch
Context triple: [MBTA Red Line, branch, Braintree branch]
  • A. Chase Manhattan Bank
    Chase Manhattan Bank was a major American commercial and investment bank based in New York City that became one of the largest financial institutions in the United States before merging into JPMorgan Chase.
  • B. Belmont Center station
    Belmont Center station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail stop located in the commercial center of Belmont, Massachusetts.
  • C. Union Station
    Union Station is a historic Beaux-Arts transportation hub and major intercity rail terminal in Washington, D.C., serving as a gateway to the U.S. capital.
  • D. Ventra
    Ventra is the contactless fare payment system used across Chicago’s public transit network, including buses and trains.
  • E. Hollywood/Highland station
    Hollywood/Highland station is a Los Angeles Metro Rail subway stop on the B Line located in the heart of Hollywood near major attractions like the Dolby Theatre and the Hollywood Walk of Fame.
  • 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: Braintree branch
Triple: [MBTA Red Line, branch, Braintree branch]
Generated description
The Braintree branch is the southern extension of Boston’s MBTA Red Line that runs from JFK/UMass station through several South Shore communities to Braintree.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Braintree branch
Target entity description: The Braintree branch is the southern extension of Boston’s MBTA Red Line that runs from JFK/UMass station through several South Shore communities to Braintree.
  • A. Chase Manhattan Bank
    Chase Manhattan Bank was a major American commercial and investment bank based in New York City that became one of the largest financial institutions in the United States before merging into JPMorgan Chase.
  • B. Belmont Center station
    Belmont Center station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail stop located in the commercial center of Belmont, Massachusetts.
  • C. Union Station
    Union Station is a historic Beaux-Arts transportation hub and major intercity rail terminal in Washington, D.C., serving as a gateway to the U.S. capital.
  • D. Ventra
    Ventra is the contactless fare payment system used across Chicago’s public transit network, including buses and trains.
  • E. Hollywood/Highland station
    Hollywood/Highland station is a Los Angeles Metro Rail subway stop on the B Line located in the heart of Hollywood near major attractions like the Dolby Theatre and the Hollywood Walk of Fame.
  • 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_69a247a8f6c08190bac804906d62ed5a completed Feb. 28, 2026, 1:40 a.m.
NER Named-entity recognition batch_69a24acd14b48190b80d4329621583df completed Feb. 28, 2026, 1:54 a.m.
NED1 Entity disambiguation (via context triple) batch_69a24e6222408190bc317b90aea16849 completed Feb. 28, 2026, 2:09 a.m.
NEDg Description generation batch_69a250f6c0308190affd58f1bfa0c261 completed Feb. 28, 2026, 2:20 a.m.
NED2 Entity disambiguation (via description) batch_69a251b471688190b067c5db8f03ac47 completed Feb. 28, 2026, 2:23 a.m.
Created at: Feb. 28, 2026, 1:46 a.m.