Triple

T8726497
Position Surface form Disambiguated ID Type / Status
Subject Union Station (Los Angeles) E207142 entity
Predicate metroLines P17559 FINISHED
Object Metro E Line (Gold/Expo connection via A Line)
The Metro E Line (Gold/Expo connection via A Line) is a Los Angeles Metro Rail light rail service that links the former Gold and Expo Lines through downtown, providing a continuous east–west transit corridor across the city.
E40367 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: Metro E Line (Gold/Expo connection via A Line) | Statement: [Union Station (Los Angeles), metroLines, Metro E Line (Gold/Expo connection via A Line)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Metro E Line (Gold/Expo connection via A Line)
Context triple: [Union Station (Los Angeles), metroLines, Metro E Line (Gold/Expo connection via A Line)]
  • A. Metro E Line
    The Metro E Line is a light rail line in Los Angeles that runs between East Los Angeles and Santa Monica, providing a major east–west transit corridor across the city.
  • B. Metro A Line
    The Metro A Line is a light rail line in Los Angeles County that runs between downtown Los Angeles and Long Beach as part of the region’s Metro Rail system.
  • C. Metro B Line
    The Metro B Line is a heavy rail subway line in Los Angeles that runs through central and Hollywood areas as part of the LA Metro Rail system.
  • D. Metro D Line
    The Metro D Line is a light rail line in the Los Angeles Metro Rail system, serving the city’s central and surrounding areas as part of its expanding transit network.
  • E. Metro L Line (under construction or reconfiguration)
    The Metro L Line is a light rail line in Los Angeles County’s Metro Rail system that is currently being reconfigured as part of a broader network restructuring and expansion.
  • 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: Metro E Line (Gold/Expo connection via A Line)
Triple: [Union Station (Los Angeles), metroLines, Metro E Line (Gold/Expo connection via A Line)]
Generated description
The Metro E Line (Gold/Expo connection via A Line) is a Los Angeles Metro Rail light rail service that links the former Gold and Expo Lines through downtown, providing a continuous east–west transit corridor across the city.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Metro E Line (Gold/Expo connection via A Line)
Target entity description: The Metro E Line (Gold/Expo connection via A Line) is a Los Angeles Metro Rail light rail service that links the former Gold and Expo Lines through downtown, providing a continuous east–west transit corridor across the city.
  • A. Metro E Line chosen
    The Metro E Line is a light rail line in Los Angeles that runs between East Los Angeles and Santa Monica, providing a major east–west transit corridor across the city.
  • B. Metro A Line
    The Metro A Line is a light rail line in Los Angeles County that runs between downtown Los Angeles and Long Beach as part of the region’s Metro Rail system.
  • C. Metro B Line
    The Metro B Line is a heavy rail subway line in Los Angeles that runs through central and Hollywood areas as part of the LA Metro Rail system.
  • D. Metro D Line
    The Metro D Line is a light rail line in the Los Angeles Metro Rail system, serving the city’s central and surrounding areas as part of its expanding transit network.
  • E. Metro L Line (under construction or reconfiguration)
    The Metro L Line is a light rail line in Los Angeles County’s Metro Rail system that is currently being reconfigured as part of a broader network restructuring and expansion.
  • F. None of above.

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_69ca835811d8819081ea00fd2a2c9a1c completed March 30, 2026, 2:06 p.m.
NER Named-entity recognition batch_69cc5d16cba881908e2a14b60ae65524 completed March 31, 2026, 11:47 p.m.
NED1 Entity disambiguation (via context triple) batch_69cf2912c4e08190a147fc31db6788d1 completed April 3, 2026, 2:42 a.m.
NEDg Description generation batch_69cf2bd42e6081908e016303eeb2241f completed April 3, 2026, 2:54 a.m.
NED2 Entity disambiguation (via description) batch_69cf2ce47b748190b883063dc3e5d16b completed April 3, 2026, 2:58 a.m.
Created at: March 30, 2026, 6:36 p.m.