Triple

T7527087
Position Surface form Disambiguated ID Type / Status
Subject Metrolink San Bernardino Line E177919 entity
Predicate hasStation P35 FINISHED
Object Covina station
Covina station is a commuter rail stop in Covina, California, serving passengers on Metrolink’s San Bernardino Line in the Greater Los Angeles area.
 E680671 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: Covina station | Statement: [Metrolink San Bernardino Line, hasStation, Covina station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Covina station
Context triple: [Metrolink San Bernardino Line, hasStation, Covina station]
  • A. Rancho Cucamonga station
    Rancho Cucamonga station is a commuter rail stop in Rancho Cucamonga, California, serving passengers on Southern California’s Metrolink network.
  • 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. Fontana station
    Fontana station is a commuter rail stop in Fontana, California, serving passengers on Metrolink’s San Bernardino Line in the Inland Empire region.
  • D. Santa Clarita station
    Santa Clarita station is a commuter rail stop in Santa Clarita, California, serving passengers on Metrolink’s Antelope Valley Line between Los Angeles and the high desert communities to the north.
  • E. 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.
  • 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: Covina station
Triple: [Metrolink San Bernardino Line, hasStation, Covina station]
Generated description
Covina station is a commuter rail stop in Covina, California, serving passengers on Metrolink’s San Bernardino Line in the Greater Los Angeles area.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Covina station
Target entity description: Covina station is a commuter rail stop in Covina, California, serving passengers on Metrolink’s San Bernardino Line in the Greater Los Angeles area.
  • A. Rancho Cucamonga station
    Rancho Cucamonga station is a commuter rail stop in Rancho Cucamonga, California, serving passengers on Southern California’s Metrolink network.
  • 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. Fontana station
    Fontana station is a commuter rail stop in Fontana, California, serving passengers on Metrolink’s San Bernardino Line in the Inland Empire region.
  • D. Santa Clarita station
    Santa Clarita station is a commuter rail stop in Santa Clarita, California, serving passengers on Metrolink’s Antelope Valley Line between Los Angeles and the high desert communities to the north.
  • E. 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.
  • 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_69c69f29bf3081909a146aec7755f185 completed March 27, 2026, 3:15 p.m.
NER Named-entity recognition batch_69c6f81cc5748190818443c48c9e3114 completed March 27, 2026, 9:35 p.m.
NED1 Entity disambiguation (via context triple) batch_69c8a204ffc0819096f632f225d290dd completed March 29, 2026, 3:52 a.m.
NEDg Description generation batch_69c8a2d073b08190a056e23cfdf13983 completed March 29, 2026, 3:56 a.m.
NED2 Entity disambiguation (via description) batch_69c8a37fabe481908c7da8a5d71a3f1c completed March 29, 2026, 3:58 a.m.
Created at: March 27, 2026, 3:47 p.m.