Triple

T20484104
Position Surface form Disambiguated ID Type / Status
Subject 91/PV Line E502539 entity
Predicate connectsWith P37 FINISHED
Object San Bernardino Line at Los Angeles Union Station
The San Bernardino Line at Los Angeles Union Station is a Metrolink commuter rail service that connects downtown Los Angeles with cities in the San Gabriel Valley and Inland Empire.
 E1434635 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 Bernardino Line at Los Angeles Union Station | Statement: [91/PV Line, connectsWith, San Bernardino Line at Los Angeles Union Station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: San Bernardino Line at Los Angeles Union Station
Context triple: [91/PV Line, connectsWith, San Bernardino Line at Los Angeles Union Station]
  • A. 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.
  • B. Los Angeles Metro Rail B Line
    The Los Angeles Metro Rail B Line is a heavy-rail subway line that runs through central Los Angeles, connecting key neighborhoods and downtown destinations as part of the city’s rapid transit system.
  • C. Balboa Park station
    Balboa Park station is a major multimodal transit hub in San Francisco serving BART and Muni Metro lines.
  • D. Jefferson/USC station
    Jefferson/USC station is a light rail stop in Los Angeles serving the University of Southern California area and surrounding neighborhoods.
  • E. Baldwin Park station
    Baldwin Park station is a commuter rail stop in Baldwin Park, California, served by Metrolink trains on the San Bernardino Line.
  • 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 Bernardino Line at Los Angeles Union Station
Triple: [91/PV Line, connectsWith, San Bernardino Line at Los Angeles Union Station]
Generated description
The San Bernardino Line at Los Angeles Union Station is a Metrolink commuter rail service that connects downtown Los Angeles with cities in the San Gabriel Valley and Inland Empire.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: San Bernardino Line at Los Angeles Union Station
Target entity description: The San Bernardino Line at Los Angeles Union Station is a Metrolink commuter rail service that connects downtown Los Angeles with cities in the San Gabriel Valley and Inland Empire.
  • A. 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.
  • B. Los Angeles Metro Rail B Line
    The Los Angeles Metro Rail B Line is a heavy-rail subway line that runs through central Los Angeles, connecting key neighborhoods and downtown destinations as part of the city’s rapid transit system.
  • C. Balboa Park station
    Balboa Park station is a major multimodal transit hub in San Francisco serving BART and Muni Metro lines.
  • D. Jefferson/USC station
    Jefferson/USC station is a light rail stop in Los Angeles serving the University of Southern California area and surrounding neighborhoods.
  • E. Baldwin Park station
    Baldwin Park station is a commuter rail stop in Baldwin Park, California, served by Metrolink trains on the San Bernardino Line.
  • 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_69e0b4af32848190aea80682b44d5d6e completed April 16, 2026, 10:06 a.m.
NER Named-entity recognition batch_69e69b59ae2c8190bfa26a3f1e59b8d1 completed April 20, 2026, 9:32 p.m.
NED1 Entity disambiguation (via context triple) batch_6a0893afefc881909807cd3a2eb92fcf completed May 16, 2026, 3:56 p.m.
NEDg Description generation batch_6a0894753bb08190a9c07a9264b2b292 completed May 16, 2026, 3:59 p.m.
NED2 Entity disambiguation (via description) batch_6a08952b742c8190b00f806ab772e46d completed May 16, 2026, 4:02 p.m.
Created at: April 16, 2026, 11:34 a.m.