Triple

T15241604

Position	Surface form	Disambiguated ID	Type / Status
Subject	North Wacker Drive	`E364267`	entity
Predicate	hasNearbyTransit	`P5822`	FINISHED
Object	Chicago Transit Authority ‘L’ stations Chicago Transit Authority ‘L’ stations are elevated and subway rapid transit stops throughout Chicago that serve as key nodes in the city’s public transportation network.	`E1145061`	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: Chicago Transit Authority ‘L’ stations | Statement: [North Wacker Drive, hasNearbyTransit, Chicago Transit Authority ‘L’ stations]

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

Target entity: Chicago Transit Authority ‘L’ stations
Context triple: [North Wacker Drive, hasNearbyTransit, Chicago Transit Authority ‘L’ stations]

A. Chicago Transit Authority Brown Line stations
Chicago Transit Authority Brown Line stations are the elevated and subway train stops in Chicago that serve the Brown Line route of the city’s “L” rapid transit system.
B. Chicago Transit Authority Green Line stations
Chicago Transit Authority Green Line stations are the train stops served by the Green Line of Chicago’s ‘L’ rapid transit system.
C. Chicago Transit Authority Pink Line stations
Chicago Transit Authority Pink Line stations are the rapid transit stops along the CTA’s Pink Line, serving neighborhoods from the Near West Side of Chicago out to its western terminus.
D. Red Line (CTA) stations
Red Line (CTA) stations are the train stops along Chicago's busiest rapid transit route, running north–south through the city and serving key neighborhoods and destinations.
E. Chicago Transit Authority Purple Line stations
Chicago Transit Authority Purple Line stations are the rapid transit stops in the Chicago 'L' system served by the Purple Line, which runs between the northern suburbs and downtown Chicago.
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: Chicago Transit Authority ‘L’ stations
Triple: [North Wacker Drive, hasNearbyTransit, Chicago Transit Authority ‘L’ stations]

Generated description

Chicago Transit Authority ‘L’ stations are elevated and subway rapid transit stops throughout Chicago that serve as key nodes in the city’s public transportation network.

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

Target entity: Chicago Transit Authority ‘L’ stations
Target entity description: Chicago Transit Authority ‘L’ stations are elevated and subway rapid transit stops throughout Chicago that serve as key nodes in the city’s public transportation network.

A. Chicago Transit Authority Brown Line stations
Chicago Transit Authority Brown Line stations are the elevated and subway train stops in Chicago that serve the Brown Line route of the city’s “L” rapid transit system.
B. Chicago Transit Authority Green Line stations
Chicago Transit Authority Green Line stations are the train stops served by the Green Line of Chicago’s ‘L’ rapid transit system.
C. Chicago Transit Authority Pink Line stations
Chicago Transit Authority Pink Line stations are the rapid transit stops along the CTA’s Pink Line, serving neighborhoods from the Near West Side of Chicago out to its western terminus.
D. Red Line (CTA) stations
Red Line (CTA) stations are the train stops along Chicago's busiest rapid transit route, running north–south through the city and serving key neighborhoods and destinations.
E. Chicago Transit Authority Purple Line stations
Chicago Transit Authority Purple Line stations are the rapid transit stops in the Chicago 'L' system served by the Purple Line, which runs between the northern suburbs and downtown Chicago.
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_69d85a0dde7481908fc64d1e82d5d20d`	completed	April 10, 2026, 2:01 a.m.
NER	Named-entity recognition	`batch_69e007dcc33081908545ea1a1d2c19fe`	completed	April 15, 2026, 9:49 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69fedd41b7c48190917385c6c61370b2`	completed	May 9, 2026, 7:07 a.m.
NEDg	Description generation	`batch_69fedf49f1c88190857cb1555e98c97e`	completed	May 9, 2026, 7:16 a.m.
NED2	Entity disambiguation (via description)	`batch_69fee06a90448190b7733aa5ee8a5d62`	completed	May 9, 2026, 7:21 a.m.

Created at: April 10, 2026, 3:13 a.m.