Triple

T6569214

Position	Surface form	Disambiguated ID	Type / Status
Subject	Alewife station	`E155389`	entity
Predicate	designedBy	`P184`	FINISHED
Object	MBTA in-house architects MBTA in-house architects are the internal architectural team of the Massachusetts Bay Transportation Authority responsible for designing and planning transit facilities and stations within the Boston-area public transportation system.	`E602149`	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: MBTA in-house architects | Statement: [Alewife station, designedBy, MBTA in-house architects]

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

Target entity: MBTA in-house architects
Context triple: [Alewife station, designedBy, MBTA in-house architects]

A. MBTA Mattapan High-Speed Line
The MBTA Mattapan High-Speed Line is a light rail trolley service in the Boston area that operates historic PCC streetcars between Ashmont Station in Dorchester and Mattapan, serving communities including Milton, Massachusetts.
B. MBTA commuter rail terminals
MBTA commuter rail terminals are major passenger rail hubs in the Boston area that serve as endpoints and transfer points for regional trains connecting the city with its surrounding suburbs and communities.
C. MBTA AFC 2.0
MBTA AFC 2.0 is the Massachusetts Bay Transportation Authority’s next-generation automated fare collection system designed to modernize how riders pay for and access public transit across Greater Boston.
D. MBTA Commuter Rail coaches
MBTA Commuter Rail coaches are bi-level and single-level passenger railcars used by the Massachusetts Bay Transportation Authority to provide regional rail service across Greater Boston and surrounding areas.
E. MBTA
The MBTA (Massachusetts Bay Transportation Authority) is the public transit agency that operates subway, bus, commuter rail, and ferry services in the Greater Boston 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: MBTA in-house architects
Triple: [Alewife station, designedBy, MBTA in-house architects]

Generated description

MBTA in-house architects are the internal architectural team of the Massachusetts Bay Transportation Authority responsible for designing and planning transit facilities and stations within the Boston-area public transportation system.

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

Target entity: MBTA in-house architects
Target entity description: MBTA in-house architects are the internal architectural team of the Massachusetts Bay Transportation Authority responsible for designing and planning transit facilities and stations within the Boston-area public transportation system.

A. MBTA Mattapan High-Speed Line
The MBTA Mattapan High-Speed Line is a light rail trolley service in the Boston area that operates historic PCC streetcars between Ashmont Station in Dorchester and Mattapan, serving communities including Milton, Massachusetts.
B. MBTA commuter rail terminals
MBTA commuter rail terminals are major passenger rail hubs in the Boston area that serve as endpoints and transfer points for regional trains connecting the city with its surrounding suburbs and communities.
C. MBTA AFC 2.0
MBTA AFC 2.0 is the Massachusetts Bay Transportation Authority’s next-generation automated fare collection system designed to modernize how riders pay for and access public transit across Greater Boston.
D. MBTA Commuter Rail coaches
MBTA Commuter Rail coaches are bi-level and single-level passenger railcars used by the Massachusetts Bay Transportation Authority to provide regional rail service across Greater Boston and surrounding areas.
E. MBTA
The MBTA (Massachusetts Bay Transportation Authority) is the public transit agency that operates subway, bus, commuter rail, and ferry services in the Greater Boston 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_69c688151254819080387f87deab8fa7`	completed	March 27, 2026, 1:37 p.m.
NER	Named-entity recognition	`batch_69c6ae56116c81909ab2fc0877363406`	completed	March 27, 2026, 4:20 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69c6cb964fe48190a28fc50426d7c5d4`	completed	March 27, 2026, 6:25 p.m.
NEDg	Description generation	`batch_69c6cd071be4819090d6adf0e27c99d2`	completed	March 27, 2026, 6:31 p.m.
NED2	Entity disambiguation (via description)	`batch_69c6ce04855481908bfca416fda8c218`	completed	March 27, 2026, 6:35 p.m.

Created at: March 27, 2026, 1:53 p.m.