Triple

T8599539

Position	Surface form	Disambiguated ID	Type / Status
Subject	Long Beach Transit Mall station	`E203638`	entity
Predicate	partOfCorridor	`P840`	FINISHED
Object	Los Angeles–Long Beach light rail corridor The Los Angeles–Long Beach light rail corridor is a major urban transit route in Southern California that connects downtown Los Angeles with the city of Long Beach via light rail service.	`E746608`	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: Los Angeles–Long Beach light rail corridor | Statement: [Long Beach Transit Mall station, partOfCorridor, Los Angeles–Long Beach light rail corridor]

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

Target entity: Los Angeles–Long Beach light rail corridor
Context triple: [Long Beach Transit Mall station, partOfCorridor, Los Angeles–Long Beach light rail corridor]

A. Los Angeles–San Diego rail corridor
The Los Angeles–San Diego rail corridor is a major Southern California passenger and freight rail route running along the coast between the Los Angeles and San Diego metropolitan areas.
B. Los Angeles Metro Rail
Los Angeles Metro Rail is a rapid transit system serving Los Angeles County, California, consisting of multiple light rail and subway lines that connect key neighborhoods, business districts, and regional destinations.
C. Alameda Corridor
The Alameda Corridor is a 20-mile freight rail expressway in Los Angeles County that consolidates and streamlines cargo movement between the region’s ports and the national rail network.
D. Metro Busway (Los Angeles)
Metro Busway (Los Angeles) is a bus rapid transit system in Los Angeles County that operates on dedicated busways and high-occupancy vehicle lanes as part of the region’s Metro transit network.
E. G Line (Los Angeles Metro)
The G Line (Los Angeles Metro) is a bus rapid transit route in Los Angeles’ San Fernando Valley that runs primarily along dedicated busways, providing high-frequency east–west service.
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: Los Angeles–Long Beach light rail corridor
Triple: [Long Beach Transit Mall station, partOfCorridor, Los Angeles–Long Beach light rail corridor]

Generated description

The Los Angeles–Long Beach light rail corridor is a major urban transit route in Southern California that connects downtown Los Angeles with the city of Long Beach via light rail service.

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

Target entity: Los Angeles–Long Beach light rail corridor
Target entity description: The Los Angeles–Long Beach light rail corridor is a major urban transit route in Southern California that connects downtown Los Angeles with the city of Long Beach via light rail service.

A. Los Angeles–San Diego rail corridor
The Los Angeles–San Diego rail corridor is a major Southern California passenger and freight rail route running along the coast between the Los Angeles and San Diego metropolitan areas.
B. Los Angeles Metro Rail
Los Angeles Metro Rail is a rapid transit system serving Los Angeles County, California, consisting of multiple light rail and subway lines that connect key neighborhoods, business districts, and regional destinations.
C. Alameda Corridor
The Alameda Corridor is a 20-mile freight rail expressway in Los Angeles County that consolidates and streamlines cargo movement between the region’s ports and the national rail network.
D. Metro Busway (Los Angeles)
Metro Busway (Los Angeles) is a bus rapid transit system in Los Angeles County that operates on dedicated busways and high-occupancy vehicle lanes as part of the region’s Metro transit network.
E. G Line (Los Angeles Metro)
The G Line (Los Angeles Metro) is a bus rapid transit route in Los Angeles’ San Fernando Valley that runs primarily along dedicated busways, providing high-frequency east–west service.
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_69ca832b56948190ba751cec255308f1`	completed	March 30, 2026, 2:05 p.m.
NER	Named-entity recognition	`batch_69cc46d7c184819083236c75f9ccc9cf`	completed	March 31, 2026, 10:12 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69cebbb11140819081bde8a1565aad4a`	completed	April 2, 2026, 6:55 p.m.
NEDg	Description generation	`batch_69cebda8e7f4819083b6885f874554f1`	completed	April 2, 2026, 7:04 p.m.
NED2	Entity disambiguation (via description)	`batch_69cebe5df4888190bf741e332af3e21e`	completed	April 2, 2026, 7:07 p.m.

Created at: March 30, 2026, 6:24 p.m.