Triple

T2071904

Position	Surface form	Disambiguated ID	Type / Status
Subject	Downtown Oakland	`E44831`	entity
Predicate	hasTransportation	`P105`	FINISHED
Object	Oakland Amtrak station (Jack London Square) Oakland Amtrak station (Jack London Square) is a major intercity passenger rail station in Oakland, California, serving Amtrak trains along the Capitol Corridor and other routes near the Jack London Square waterfront district.	`E231570`	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: Oakland Amtrak station (Jack London Square) | Statement: [Downtown Oakland, hasTransportation, Oakland Amtrak station (Jack London Square)]

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

Target entity: Oakland Amtrak station (Jack London Square)
Context triple: [Downtown Oakland, hasTransportation, Oakland Amtrak station (Jack London Square)]

A. Downtown Berkeley station
Downtown Berkeley station is a major underground Bay Area Rapid Transit (BART) stop serving the commercial core and university area of Berkeley, California.
B. Emeryville station
Emeryville station is a major Amtrak rail terminal in Emeryville, California, serving as the primary San Francisco–area hub and western terminus for long-distance routes like the California Zephyr.
C. San Francisco 4th and King Street station
San Francisco 4th and King Street station is a major commuter rail terminal in San Francisco that serves as the northern terminus for Caltrain services between the city and the Peninsula/Silicon Valley.
D. BART Embarcadero Station
BART Embarcadero Station is a major underground transit hub in downtown San Francisco serving Bay Area Rapid Transit trains and connecting with Muni Metro light rail lines.
E. Oakland International Airport station
Oakland International Airport station is a Bay Area Rapid Transit (BART) rail station that provides direct transit service between Oakland International Airport and the broader San Francisco Bay Area.
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: Oakland Amtrak station (Jack London Square)
Triple: [Downtown Oakland, hasTransportation, Oakland Amtrak station (Jack London Square)]

Generated description

Oakland Amtrak station (Jack London Square) is a major intercity passenger rail station in Oakland, California, serving Amtrak trains along the Capitol Corridor and other routes near the Jack London Square waterfront district.

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

Target entity: Oakland Amtrak station (Jack London Square)
Target entity description: Oakland Amtrak station (Jack London Square) is a major intercity passenger rail station in Oakland, California, serving Amtrak trains along the Capitol Corridor and other routes near the Jack London Square waterfront district.

A. Downtown Berkeley station
Downtown Berkeley station is a major underground Bay Area Rapid Transit (BART) stop serving the commercial core and university area of Berkeley, California.
B. Emeryville station
Emeryville station is a major Amtrak rail terminal in Emeryville, California, serving as the primary San Francisco–area hub and western terminus for long-distance routes like the California Zephyr.
C. San Francisco 4th and King Street station
San Francisco 4th and King Street station is a major commuter rail terminal in San Francisco that serves as the northern terminus for Caltrain services between the city and the Peninsula/Silicon Valley.
D. BART Embarcadero Station
BART Embarcadero Station is a major underground transit hub in downtown San Francisco serving Bay Area Rapid Transit trains and connecting with Muni Metro light rail lines.
E. Oakland International Airport station
Oakland International Airport station is a Bay Area Rapid Transit (BART) rail station that provides direct transit service between Oakland International Airport and the broader San Francisco Bay Area.
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_69a88916c2b48190a5ca2e9b12cad3ed`	completed	March 4, 2026, 7:33 p.m.
NER	Named-entity recognition	`batch_69abba0d20bc8190b19a32157f8b1607`	completed	March 7, 2026, 5:39 a.m.
NED1	Entity disambiguation (via context triple)	`batch_69ae272bd51881909b7da12925195417`	completed	March 9, 2026, 1:49 a.m.
NEDg	Description generation	`batch_69ae28e6d8fc8190b5c0215607214b41`	completed	March 9, 2026, 1:56 a.m.
NED2	Entity disambiguation (via description)	`batch_69ae29556978819082f771e0723c4f0b`	completed	March 9, 2026, 1:58 a.m.

Created at: March 4, 2026, 7:41 p.m.