Triple

T5661448
Position Surface form Disambiguated ID Type / Status
Subject Stanford Marguerite Shuttle E124749 entity
Predicate connects P390 FINISHED
Object Caltrain stations
Caltrain stations are commuter rail stops along the San Francisco Peninsula and South Bay that serve as key transit hubs connecting cities between San Francisco and Gilroy.
 E537938 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: Caltrain stations | Statement: [Stanford Marguerite Shuttle, connects, Caltrain stations]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Caltrain stations
Context triple: [Stanford Marguerite Shuttle, connects, Caltrain stations]
  • A. Belmont Caltrain station
    Belmont Caltrain station is a commuter rail station in Belmont, California, providing Peninsula rail service on the Caltrain line between San Francisco and San Jose.
  • B. 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.
  • C. San Bruno Caltrain station
    San Bruno Caltrain station is a commuter rail stop on Caltrain’s Peninsula corridor serving passengers in the city of San Bruno, south of San Francisco.
  • D. 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.
  • E. Burlingame Caltrain station
    Burlingame Caltrain station is a commuter rail station in Burlingame, California, served by Caltrain trains along the San Francisco Peninsula corridor.
  • 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: Caltrain stations
Triple: [Stanford Marguerite Shuttle, connects, Caltrain stations]
Generated description
Caltrain stations are commuter rail stops along the San Francisco Peninsula and South Bay that serve as key transit hubs connecting cities between San Francisco and Gilroy.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Caltrain stations
Target entity description: Caltrain stations are commuter rail stops along the San Francisco Peninsula and South Bay that serve as key transit hubs connecting cities between San Francisco and Gilroy.
  • A. Belmont Caltrain station
    Belmont Caltrain station is a commuter rail station in Belmont, California, providing Peninsula rail service on the Caltrain line between San Francisco and San Jose.
  • B. 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.
  • C. San Bruno Caltrain station
    San Bruno Caltrain station is a commuter rail stop on Caltrain’s Peninsula corridor serving passengers in the city of San Bruno, south of San Francisco.
  • D. 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.
  • E. Burlingame Caltrain station
    Burlingame Caltrain station is a commuter rail station in Burlingame, California, served by Caltrain trains along the San Francisco Peninsula corridor.
  • 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_69c0082774a481909d7e63fb2aad56ac completed March 22, 2026, 3:17 p.m.
NER Named-entity recognition batch_69c0232077448190afdef460671eaf4f completed March 22, 2026, 5:13 p.m.
NED1 Entity disambiguation (via context triple) batch_69c04da6fa808190a3c500ee664bb150 completed March 22, 2026, 8:14 p.m.
NEDg Description generation batch_69c04edf30448190a60eda49b8b031a0 completed March 22, 2026, 8:19 p.m.
NED2 Entity disambiguation (via description) batch_69c04fb62690819083327781cb857ccc completed March 22, 2026, 8:23 p.m.
Created at: March 22, 2026, 3:42 p.m.