Triple

T20301891

Position	Surface form	Disambiguated ID	Type / Status
Subject	Blue Line (MBTA)	`E505501`	entity
Predicate	hasStation	`P35`	FINISHED
Object	Beachmont station	`—`	NE NERFINISHED

How this triple was built (3 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: Beachmont station | Statement: [Blue Line (MBTA), hasStation, Beachmont station]

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Beachmont station
Context triple: [Blue Line (MBTA), hasStation, Beachmont station]

A. Ravenswood station
Ravenswood station is a commuter rail stop in Chicago, Illinois, served by Metra’s Union Pacific North Line and connecting the Ravenswood neighborhood to downtown and northern suburbs.
B. Canton Junction station
Canton Junction station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail station in Canton, Massachusetts, serving as a junction point for trains on the Providence/Stoughton Line.
C. Old Town station
Old Town station is a commuter rail stop in Lewisville, Texas, serving Denton County’s A-train line.
D. Montgomery St. station
Montgomery St. station is a major underground Bay Area Rapid Transit (BART) station located in San Francisco’s Financial District, serving as a key hub for commuters and connections to Muni Metro.
E. Briarwood station
Briarwood station is a New York City Subway station in Queens serving the IND Queens Boulevard Line.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Beachmont station
Target entity description: Beachmont station is an MBTA rapid transit stop on the Blue Line located in Revere, Massachusetts, serving nearby residential neighborhoods and Revere Beach.

A. Ravenswood station
Ravenswood station is a commuter rail stop in Chicago, Illinois, served by Metra’s Union Pacific North Line and connecting the Ravenswood neighborhood to downtown and northern suburbs.
B. Canton Junction station
Canton Junction station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail station in Canton, Massachusetts, serving as a junction point for trains on the Providence/Stoughton Line.
C. Old Town station
Old Town station is a commuter rail stop in Lewisville, Texas, serving Denton County’s A-train line.
D. Montgomery St. station
Montgomery St. station is a major underground Bay Area Rapid Transit (BART) station located in San Francisco’s Financial District, serving as a key hub for commuters and connections to Muni Metro.
E. Briarwood station
Briarwood station is a New York City Subway station in Queens serving the IND Queens Boulevard Line.
F. None of above. chosen

Provenance (2 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_69e0b4b8ab648190906e18538c250148`	completed	April 16, 2026, 10:06 a.m.
NER	Named-entity recognition	`batch_69e6770d82b48190b21ce7c52ec6d5a0`	completed	April 20, 2026, 6:57 p.m.

Created at: April 16, 2026, 11:17 a.m.