Triple

T28017009

Position	Surface form	Disambiguated ID	Type / Status
Subject	Southwest Corridor alignment of the Orange Line	`E707570`	entity
Predicate	replacedServiceOn	`P26479`	FINISHED
Object	Washington Street corridor The Washington Street corridor is a major urban thoroughfare in Boston that historically carried Orange Line elevated rail service and later became a key focus of transit and redevelopment efforts after that service was removed.	`E1799744`	NE FINISHED

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: Washington Street corridor | Statement: [Southwest Corridor alignment of the Orange Line, replacedServiceOn, Washington Street corridor]

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: Washington Street corridor
Triple: [Southwest Corridor alignment of the Orange Line, replacedServiceOn, Washington Street corridor]

Generated description

The Washington Street corridor is a major urban thoroughfare in Boston that historically carried Orange Line elevated rail service and later became a key focus of transit and redevelopment efforts after that service was removed.

PD Predicate disambiguation gpt-5-mini-2025-08-07

Target predicate: replacedServiceOn
Context triple: [Southwest Corridor alignment of the Orange Line, replacedServiceOn, Washington Street corridor]

A. enteredServiceAsReplacementFor chosen
Indicates that one entity began its period of service specifically to take over the role or function previously performed by another entity.
B. replacedOnPlatformBy
Indicates that one entity has been superseded or taken over by another entity on a particular platform.
C. serviceRenamedAs
Indicates that a service previously known by one name is now identified or referred to by a different name.
D. replacedWith
Indicates that one entity has been substituted or superseded by another entity, taking over its role, function, or position.
E. replacedSubsystem
Indicates that one subsystem has been substituted or exchanged for another, taking over its role or function.
F. None of above.

Provenance (6 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_69ef96baf3a881909a2b63844185dddd`	completed	April 27, 2026, 5:02 p.m.
NER	Named-entity recognition	`batch_69f707f7959881908f037f0d6b1d0c36`	completed	May 3, 2026, 8:31 a.m.
NED1	Entity disambiguation (via context triple)	`batch_6a15b8a456148190b2b595132ebe44f7`	completed	May 26, 2026, 3:13 p.m.
NEDg	Description generation	`batch_6a15ba0eed048190aaaf5b9d5045ff5d`	completed	May 26, 2026, 3:19 p.m.
NED2	Entity disambiguation (via description)	`batch_6a15bb03ba088190bd62a5a9de0115f5`	completed	May 26, 2026, 3:23 p.m.
PD	Predicate disambiguation	`batch_69f700fc274c8190a128593dc7c7abd0`	completed	May 3, 2026, 8:02 a.m.

Created at: April 27, 2026, 8:07 p.m.