Triple

T10938840
Position Surface form Disambiguated ID Type / Status
Subject King Street (San Francisco) E258409 entity
Predicate isMajorAccessRouteFor P1179 FINISHED
Object San Francisco Caltrain Station
San Francisco Caltrain Station is a major commuter rail terminal in San Francisco that serves as the northern terminus for Caltrain services connecting the city with the Peninsula and Silicon Valley.
 E895236 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: San Francisco Caltrain Station | Statement: [King Street (San Francisco), isMajorAccessRouteFor, San Francisco Caltrain Station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: San Francisco Caltrain Station
Context triple: [King Street (San Francisco), isMajorAccessRouteFor, San Francisco Caltrain Station]
  • A. Palo Alto Caltrain Station
    Palo Alto Caltrain Station is a major commuter rail station in Palo Alto, California, serving as a key transit hub for Caltrain services along the San Francisco Peninsula.
  • B. San Mateo Caltrain Station
    San Mateo Caltrain Station is a commuter rail station in San Mateo, California that serves as a key transit hub for Peninsula and Bay Area travelers.
  • C. Broadway Caltrain station
    Broadway Caltrain station is a commuter rail stop in Burlingame, California, serving passengers on Caltrain’s Peninsula Corridor between San Francisco and San Jose.
  • D. San Carlos Caltrain station
    San Carlos Caltrain station is a commuter rail station on the Caltrain line serving the city of San Carlos in San Mateo County, California.
  • E. Mountain View Caltrain station
    Mountain View Caltrain station is a commuter rail station in Mountain View, California, serving as a key transit hub in Silicon Valley with connections to local light rail and bus services.
  • 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: San Francisco Caltrain Station
Triple: [King Street (San Francisco), isMajorAccessRouteFor, San Francisco Caltrain Station]
Generated description
San Francisco Caltrain Station is a major commuter rail terminal in San Francisco that serves as the northern terminus for Caltrain services connecting the city with the Peninsula and Silicon Valley.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: San Francisco Caltrain Station
Target entity description: San Francisco Caltrain Station is a major commuter rail terminal in San Francisco that serves as the northern terminus for Caltrain services connecting the city with the Peninsula and Silicon Valley.
  • A. Palo Alto Caltrain Station
    Palo Alto Caltrain Station is a major commuter rail station in Palo Alto, California, serving as a key transit hub for Caltrain services along the San Francisco Peninsula.
  • B. San Mateo Caltrain Station
    San Mateo Caltrain Station is a commuter rail station in San Mateo, California that serves as a key transit hub for Peninsula and Bay Area travelers.
  • C. Broadway Caltrain station
    Broadway Caltrain station is a commuter rail stop in Burlingame, California, serving passengers on Caltrain’s Peninsula Corridor between San Francisco and San Jose.
  • D. San Carlos Caltrain station
    San Carlos Caltrain station is a commuter rail station on the Caltrain line serving the city of San Carlos in San Mateo County, California.
  • E. Mountain View Caltrain station
    Mountain View Caltrain station is a commuter rail station in Mountain View, California, serving as a key transit hub in Silicon Valley with connections to local light rail and bus services.
  • 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_69d6aa8769b4819082bfe5e61b9017f0 completed April 8, 2026, 7:20 p.m.
NER Named-entity recognition batch_69d770b12a9881909305db49aa554a1b completed April 9, 2026, 9:26 a.m.
NED1 Entity disambiguation (via context triple) batch_69e23c0e940081908c84ea4cf3b877fc completed April 17, 2026, 1:56 p.m.
NEDg Description generation batch_69e24541cbb481908f14a9cb2787c118 completed April 17, 2026, 2:35 p.m.
NED2 Entity disambiguation (via description) batch_69e248f48dc88190af9491e8cdc4a532 completed April 17, 2026, 2:51 p.m.
Created at: April 8, 2026, 9:23 p.m.