Triple

T3999001
Position Surface form Disambiguated ID Type / Status
Subject Richmond–Millbrae line E87165 entity
Predicate interchangeWith P3495 FINISHED
Object Amtrak San Joaquins at Richmond station
Amtrak San Joaquins at Richmond station is a regional intercity passenger rail service stop in Richmond, California, providing connections between the San Joaquin Valley and the San Francisco Bay Area.
 E408797 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 San Joaquins at Richmond station | Statement: [Richmond–Millbrae line, interchangeWith, Amtrak San Joaquins at Richmond station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Amtrak San Joaquins at Richmond station
Context triple: [Richmond–Millbrae line, interchangeWith, Amtrak San Joaquins at Richmond station]
  • A. Amtrak Capitol Corridor at Richmond station
    The Amtrak Capitol Corridor at Richmond station is a key intercity rail service stop in Richmond, California, providing regional passenger connections between the Bay Area and Sacramento Valley.
  • B. Amtrak Sacramento Valley Station
    Amtrak Sacramento Valley Station is the main intercity passenger rail station in Sacramento, California, serving Amtrak trains and regional transit connections.
  • C. Madera Amtrak station
    Madera Amtrak station is a passenger rail station in Madera, California, served by Amtrak’s San Joaquins route in the San Joaquin Valley.
  • D. Muni Metro at Embarcadero Station
    Muni Metro at Embarcadero Station is a major San Francisco light rail hub located in the Financial District, serving multiple Muni Metro lines and connecting to regional transit services.
  • E. Richmond BART station
    Richmond BART station is a major transit hub in Richmond, California, serving as the northern terminus of BART’s Richmond line and an intermodal connection point with Amtrak and local buses.
  • 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 San Joaquins at Richmond station
Triple: [Richmond–Millbrae line, interchangeWith, Amtrak San Joaquins at Richmond station]
Generated description
Amtrak San Joaquins at Richmond station is a regional intercity passenger rail service stop in Richmond, California, providing connections between the San Joaquin Valley and the San Francisco Bay Area.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Amtrak San Joaquins at Richmond station
Target entity description: Amtrak San Joaquins at Richmond station is a regional intercity passenger rail service stop in Richmond, California, providing connections between the San Joaquin Valley and the San Francisco Bay Area.
  • A. Amtrak Capitol Corridor at Richmond station
    The Amtrak Capitol Corridor at Richmond station is a key intercity rail service stop in Richmond, California, providing regional passenger connections between the Bay Area and Sacramento Valley.
  • B. Amtrak Sacramento Valley Station
    Amtrak Sacramento Valley Station is the main intercity passenger rail station in Sacramento, California, serving Amtrak trains and regional transit connections.
  • C. Madera Amtrak station
    Madera Amtrak station is a passenger rail station in Madera, California, served by Amtrak’s San Joaquins route in the San Joaquin Valley.
  • D. Muni Metro at Embarcadero Station
    Muni Metro at Embarcadero Station is a major San Francisco light rail hub located in the Financial District, serving multiple Muni Metro lines and connecting to regional transit services.
  • E. Richmond BART station
    Richmond BART station is a major transit hub in Richmond, California, serving as the northern terminus of BART’s Richmond line and an intermodal connection point with Amtrak and local buses.
  • 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_69aed94118148190975e6aa4e554cde9 completed March 9, 2026, 2:29 p.m.
NER Named-entity recognition batch_69aefa4065ac8190a898a1025365b8e9 completed March 9, 2026, 4:50 p.m.
NED1 Entity disambiguation (via context triple) batch_69b5562139b481909faba39f4f36cd26 completed March 14, 2026, 12:35 p.m.
NEDg Description generation batch_69b5569d6b9c8190bea12fcfb9b444d9 completed March 14, 2026, 12:37 p.m.
NED2 Entity disambiguation (via description) batch_69b55706a2708190aeb41591b91f0fba completed March 14, 2026, 12:39 p.m.
Created at: March 9, 2026, 3:34 p.m.