Triple

T5226470
Position Surface form Disambiguated ID Type / Status
Subject Metrolink 91/Perris Valley Line E118000 entity
Predicate terminus P388 FINISHED
Object Perris–South station
Perris–South station is a commuter rail station in Perris, California, serving as the southern endpoint of Metrolink service in the Perris Valley area.
 E509508 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: Perris–South station | Statement: [Metrolink 91/Perris Valley Line, terminus, Perris–South station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Perris–South station
Context triple: [Metrolink 91/Perris Valley Line, terminus, Perris–South station]
  • A. Fullerton station
    Fullerton station is a major Chicago 'L' transit hub in the Lincoln Park neighborhood, serving multiple CTA lines and providing access to DePaul University and the surrounding area.
  • B. Riverside–La Sierra station
    Riverside–La Sierra station is a commuter rail station in Riverside, California, serving Metrolink passengers traveling within the Inland Empire and to Orange County.
  • C. Riverside–Downtown station
    Riverside–Downtown station is a major intermodal transit hub in Riverside, California, serving multiple Metrolink commuter rail lines and connecting bus services.
  • D. Irvine station
    Irvine station is a major multimodal transportation hub in Irvine, California, serving commuter rail and bus services for the surrounding region.
  • E. San Bernardino–Downtown station
    San Bernardino–Downtown station is a commuter rail and transit hub in downtown San Bernardino, California, serving Metrolink trains and local bus connections.
  • 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: Perris–South station
Triple: [Metrolink 91/Perris Valley Line, terminus, Perris–South station]
Generated description
Perris–South station is a commuter rail station in Perris, California, serving as the southern endpoint of Metrolink service in the Perris Valley area.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Perris–South station
Target entity description: Perris–South station is a commuter rail station in Perris, California, serving as the southern endpoint of Metrolink service in the Perris Valley area.
  • A. Fullerton station
    Fullerton station is a major Chicago 'L' transit hub in the Lincoln Park neighborhood, serving multiple CTA lines and providing access to DePaul University and the surrounding area.
  • B. Riverside–La Sierra station
    Riverside–La Sierra station is a commuter rail station in Riverside, California, serving Metrolink passengers traveling within the Inland Empire and to Orange County.
  • C. Riverside–Downtown station
    Riverside–Downtown station is a major intermodal transit hub in Riverside, California, serving multiple Metrolink commuter rail lines and connecting bus services.
  • D. Irvine station
    Irvine station is a major multimodal transportation hub in Irvine, California, serving commuter rail and bus services for the surrounding region.
  • E. San Bernardino–Downtown station
    San Bernardino–Downtown station is a commuter rail and transit hub in downtown San Bernardino, California, serving Metrolink trains and local bus connections.
  • 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_69bd4466fb8c819083b806a79414d7e4 completed March 20, 2026, 12:58 p.m.
NER Named-entity recognition batch_69bd7adc9be081909903b9f844c3d146 completed March 20, 2026, 4:50 p.m.
NED1 Entity disambiguation (via context triple) batch_69bf10c62888819082afe8d6ec6275a2 completed March 21, 2026, 9:42 p.m.
NEDg Description generation batch_69bf11635b9c819092130c46caea9306 completed March 21, 2026, 9:45 p.m.
NED2 Entity disambiguation (via description) batch_69bf11e982d08190bc74312bf6ee7127 completed March 21, 2026, 9:47 p.m.
Created at: March 20, 2026, 1:48 p.m.