Triple

T7323137

Position	Surface form	Disambiguated ID	Type / Status
Subject	Cambridge Center for Adult Education	`E168800`	entity
Predicate	near	`P350`	FINISHED
Object	Harvard Square MBTA station Harvard Square MBTA station is a major Red Line subway and bus hub located in the historic Harvard Square area of Cambridge, Massachusetts, serving Harvard University and the surrounding neighborhood.	`E656995`	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: Harvard Square MBTA station | Statement: [Cambridge Center for Adult Education, near, Harvard Square MBTA station]

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

Target entity: Harvard Square MBTA station
Context triple: [Cambridge Center for Adult Education, near, Harvard Square MBTA station]

A. MBTA Charles/MGH station
MBTA Charles/MGH station is a Red Line subway stop in Boston serving Massachusetts General Hospital and the Charles River area.
B. Porter Square MBTA Red Line station
Porter Square MBTA Red Line station is an underground rapid transit and commuter rail hub in Cambridge, Massachusetts, serving the MBTA Red Line and Fitchburg Line with access to the surrounding Porter Square commercial district.
C. Massachusetts Avenue station
Massachusetts Avenue station is an underground rapid transit stop in Boston, Massachusetts, located in the South End and served by the MBTA's Orange Line.
D. Coolidge Corner station
Coolidge Corner station is a light rail stop on the MBTA Green Line in Brookline, Massachusetts, serving the busy commercial and residential Coolidge Corner neighborhood.
E. Boylston station
Boylston station is a historic underground light rail stop in downtown Boston that serves the MBTA Green Line.
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: Harvard Square MBTA station
Triple: [Cambridge Center for Adult Education, near, Harvard Square MBTA station]

Generated description

Harvard Square MBTA station is a major Red Line subway and bus hub located in the historic Harvard Square area of Cambridge, Massachusetts, serving Harvard University and the surrounding neighborhood.

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

Target entity: Harvard Square MBTA station
Target entity description: Harvard Square MBTA station is a major Red Line subway and bus hub located in the historic Harvard Square area of Cambridge, Massachusetts, serving Harvard University and the surrounding neighborhood.

A. MBTA Charles/MGH station
MBTA Charles/MGH station is a Red Line subway stop in Boston serving Massachusetts General Hospital and the Charles River area.
B. Porter Square MBTA Red Line station
Porter Square MBTA Red Line station is an underground rapid transit and commuter rail hub in Cambridge, Massachusetts, serving the MBTA Red Line and Fitchburg Line with access to the surrounding Porter Square commercial district.
C. Massachusetts Avenue station
Massachusetts Avenue station is an underground rapid transit stop in Boston, Massachusetts, located in the South End and served by the MBTA's Orange Line.
D. Coolidge Corner station
Coolidge Corner station is a light rail stop on the MBTA Green Line in Brookline, Massachusetts, serving the busy commercial and residential Coolidge Corner neighborhood.
E. Boylston station
Boylston station is a historic underground light rail stop in downtown Boston that serves the MBTA Green Line.
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_69c68a54cacc81908e3b773441f19566`	completed	March 27, 2026, 1:47 p.m.
NER	Named-entity recognition	`batch_69c6f0446628819093e96236f1aa4a9b`	completed	March 27, 2026, 9:01 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69c7ef0609dc81909f298d3963fc88af`	completed	March 28, 2026, 3:08 p.m.
NEDg	Description generation	`batch_69c7efbe72c88190b3523c05224d13b3`	completed	March 28, 2026, 3:11 p.m.
NED2	Entity disambiguation (via description)	`batch_69c7f053d2108190a0f5e3b1a3516171`	completed	March 28, 2026, 3:14 p.m.

Created at: March 27, 2026, 3:03 p.m.