Triple

T34154604

Position	Surface form	Disambiguated ID	Type / Status
Subject	Metro Vancouver public transit network	`E876098`	entity
Predicate	hasCommuterRailRoute	`P58937`	FINISHED
Object	Waterfront–Mission City West Coast Express line The Waterfront–Mission City West Coast Express line is a commuter rail service in Metro Vancouver that connects downtown Vancouver’s Waterfront Station with the suburban city of Mission, primarily serving weekday peak-hour commuters.	`E2083571`	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: Waterfront–Mission City West Coast Express line | Statement: [Metro Vancouver public transit network, hasCommuterRailRoute, Waterfront–Mission City West Coast Express line]

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: Waterfront–Mission City West Coast Express line
Triple: [Metro Vancouver public transit network, hasCommuterRailRoute, Waterfront–Mission City West Coast Express line]

Generated description

The Waterfront–Mission City West Coast Express line is a commuter rail service in Metro Vancouver that connects downtown Vancouver’s Waterfront Station with the suburban city of Mission, primarily serving weekday peak-hour commuters.

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

Target predicate: hasCommuterRailRoute
Context triple: [Metro Vancouver public transit network, hasCommuterRailRoute, Waterfront–Mission City West Coast Express line]

A. commuterRailMode
Indicates that the relationship involves travel or transportation specifically by commuter rail as the mode of transit between the related entities.
B. hasMBTACommuterRailTerminus
Indicates that one entity serves as the endpoint or final stop of an MBTA Commuter Rail line for the other entity.
C. hasRailRoute chosen
Indicates that there exists a rail-based transportation route or connection between the related entities.
D. hasCommuterServices
Indicates that a location or facility provides transportation services specifically intended for regular commuters, such as daily or frequent travelers between home and work or school.
E. servesCommuterRailLine
Indicates that a location or facility provides access to and is a stop or station for a commuter rail line.
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_69f349abaa508190a820f206620efddc`	completed	April 30, 2026, 12:23 p.m.
NER	Named-entity recognition	`batch_6a037c8ae0248190b7e2ce4bf852c22d`	completed	May 12, 2026, 7:16 p.m.
NED1	Entity disambiguation (via context triple)	`batch_6a36c1cf3dc88190bfa04824db491d85`	completed	June 20, 2026, 4:37 p.m.
NEDg	Description generation	`batch_6a36c328ba788190ac5f7e0d59cedcff`	completed	June 20, 2026, 4:43 p.m.
NED2	Entity disambiguation (via description)	`batch_6a36c3da25608190b47fdf74705560bc`	completed	June 20, 2026, 4:46 p.m.
PD	Predicate disambiguation	`batch_6a0379f963908190846d232f386fd98f`	completed	May 12, 2026, 7:05 p.m.

Created at: May 1, 2026, 1:54 a.m.