Triple

T6188909
Position Surface form Disambiguated ID Type / Status
Subject Diridon Station E138135 entity
Predicate isMajorHubFor P164 FINISHED
Object Amtrak in Silicon Valley
Amtrak in Silicon Valley refers to the intercity passenger rail services that connect the Silicon Valley region—centered around San Jose’s Diridon Station—to major destinations across California and beyond.
 E574670 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: Amtrak in Silicon Valley | Statement: [Diridon Station, isMajorHubFor, Amtrak in Silicon Valley]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Amtrak in Silicon Valley
Context triple: [Diridon Station, isMajorHubFor, Amtrak in Silicon Valley]
  • A. California intercity passenger rail program
    The California intercity passenger rail program is a statewide initiative that funds, coordinates, and oversees multiple state-supported intercity rail corridors to provide alternative, higher-capacity transportation options across California.
  • B. BART Silicon Valley extension
    The BART Silicon Valley extension is a major Bay Area Rapid Transit project extending rail service into Santa Clara County, including new stations in San José and surrounding areas.
  • C. California High-Speed Rail
    California High-Speed Rail is a planned statewide high-speed train system in California designed to connect major cities like San Francisco, Los Angeles, and San Diego with fast, electrified rail service.
  • D. Caltrain
    Caltrain is a commuter rail service on the San Francisco Peninsula and in the Santa Clara Valley, connecting San Francisco to San Jose and Gilroy in California.
  • E. Altamont Corridor Express
    Altamont Corridor Express is a commuter rail service in Northern California that connects Central Valley communities with the 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: Amtrak in Silicon Valley
Triple: [Diridon Station, isMajorHubFor, Amtrak in Silicon Valley]
Generated description
Amtrak in Silicon Valley refers to the intercity passenger rail services that connect the Silicon Valley region—centered around San Jose’s Diridon Station—to major destinations across California and beyond.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Amtrak in Silicon Valley
Target entity description: Amtrak in Silicon Valley refers to the intercity passenger rail services that connect the Silicon Valley region—centered around San Jose’s Diridon Station—to major destinations across California and beyond.
  • A. California intercity passenger rail program
    The California intercity passenger rail program is a statewide initiative that funds, coordinates, and oversees multiple state-supported intercity rail corridors to provide alternative, higher-capacity transportation options across California.
  • B. BART Silicon Valley extension
    The BART Silicon Valley extension is a major Bay Area Rapid Transit project extending rail service into Santa Clara County, including new stations in San José and surrounding areas.
  • C. California High-Speed Rail
    California High-Speed Rail is a planned statewide high-speed train system in California designed to connect major cities like San Francisco, Los Angeles, and San Diego with fast, electrified rail service.
  • D. Caltrain
    Caltrain is a commuter rail service on the San Francisco Peninsula and in the Santa Clara Valley, connecting San Francisco to San Jose and Gilroy in California.
  • E. Altamont Corridor Express
    Altamont Corridor Express is a commuter rail service in Northern California that connects Central Valley communities with the 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_69c008a8fd408190b7ec6e42934974a6 completed March 22, 2026, 3:20 p.m.
NER Named-entity recognition batch_69c062192c5481909eb41f8c5d1208a3 completed March 22, 2026, 9:41 p.m.
NED1 Entity disambiguation (via context triple) batch_69c16f06c770819087e055cfe6c8b134 completed March 23, 2026, 4:49 p.m.
NEDg Description generation batch_69c1bfb484ac8190903efdf4a18f3a1c completed March 23, 2026, 10:33 p.m.
NED2 Entity disambiguation (via description) batch_69c1c03551008190af5e3427b4cdcd11 completed March 23, 2026, 10:35 p.m.
Created at: March 22, 2026, 4:19 p.m.