Triple

T2996042
Position Surface form Disambiguated ID Type / Status
Subject Red Line (Los Angeles Metro) E81068 entity
Predicate formerNameOf P65 FINISHED
Object B Line (Los Angeles Metro)
The B Line is a heavy-rail rapid transit line in the Los Angeles Metro system that runs primarily underground, connecting North Hollywood to downtown Los Angeles.
 E372503 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: B Line (Los Angeles Metro) | Statement: [Red Line (Los Angeles Metro), formerNameOf, B Line (Los Angeles Metro)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: B Line (Los Angeles Metro)
Context triple: [Red Line (Los Angeles Metro), formerNameOf, B Line (Los Angeles Metro)]
  • A. E Line (Los Angeles Metro)
    The E Line (Los Angeles Metro) is a light rail line in Los Angeles County that runs east–west, linking downtown Los Angeles with Santa Monica and several major Westside and Expo Corridor destinations.
  • B. L Line (Los Angeles Metro)
    The L Line was a light rail route in the Los Angeles Metro Rail system that connected East Los Angeles and the San Gabriel Valley to downtown and northeast Los Angeles before being restructured into other lines.
  • C. K Line (Los Angeles Metro)
    The K Line is a light rail route in the Los Angeles Metro Rail system serving neighborhoods in South Los Angeles and connecting to major transit hubs.
  • D. C Line (Los Angeles Metro)
    The C Line (Los Angeles Metro) is an east–west light rail route in Los Angeles County that primarily runs along the I-105 freeway corridor, linking coastal areas near Redondo Beach with inland transit hubs including connections to other Metro Rail lines.
  • E. A Line (Los Angeles Metro)
    A Line (Los Angeles Metro) is a light rail line in Los Angeles County that runs north–south and east–west, linking downtown Los Angeles with surrounding communities such as Long Beach, Azusa, and East Los Angeles.
  • 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: B Line (Los Angeles Metro)
Triple: [Red Line (Los Angeles Metro), formerNameOf, B Line (Los Angeles Metro)]
Generated description
The B Line is a heavy-rail rapid transit line in the Los Angeles Metro system that runs primarily underground, connecting North Hollywood to downtown Los Angeles.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: B Line (Los Angeles Metro)
Target entity description: The B Line is a heavy-rail rapid transit line in the Los Angeles Metro system that runs primarily underground, connecting North Hollywood to downtown Los Angeles.
  • A. E Line (Los Angeles Metro)
    The E Line (Los Angeles Metro) is a light rail line in Los Angeles County that runs east–west, linking downtown Los Angeles with Santa Monica and several major Westside and Expo Corridor destinations.
  • B. L Line (Los Angeles Metro)
    The L Line was a light rail route in the Los Angeles Metro Rail system that connected East Los Angeles and the San Gabriel Valley to downtown and northeast Los Angeles before being restructured into other lines.
  • C. K Line (Los Angeles Metro)
    The K Line is a light rail route in the Los Angeles Metro Rail system serving neighborhoods in South Los Angeles and connecting to major transit hubs.
  • D. C Line (Los Angeles Metro)
    The C Line (Los Angeles Metro) is an east–west light rail route in Los Angeles County that primarily runs along the I-105 freeway corridor, linking coastal areas near Redondo Beach with inland transit hubs including connections to other Metro Rail lines.
  • E. A Line (Los Angeles Metro)
    A Line (Los Angeles Metro) is a light rail line in Los Angeles County that runs north–south and east–west, linking downtown Los Angeles with surrounding communities such as Long Beach, Azusa, and East Los Angeles.
  • 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_69ad8b187fc8819085914d3c9ea3142d completed March 8, 2026, 2:43 p.m.
NER Named-entity recognition batch_69ad99f481688190ae8cd1e057f9dfc7 completed March 8, 2026, 3:47 p.m.
NED1 Entity disambiguation (via context triple) batch_69b432e95eb48190b51692cfbd7b22a6 completed March 13, 2026, 3:53 p.m.
NEDg Description generation batch_69b4344499148190a116c39c45fb636f completed March 13, 2026, 3:59 p.m.
NED2 Entity disambiguation (via description) batch_69b434abc9848190924cc8ceff2a0220 completed March 13, 2026, 4 p.m.
Created at: March 8, 2026, 2:59 p.m.