Triple

T1756120
Position Surface form Disambiguated ID Type / Status
Subject Metro Rail (Los Angeles) E38551 entity
Predicate formerLine P32801 FINISHED
Object 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.
E210510 NE FINISHED

How this triple was built (5 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: L Line (Los Angeles Metro) | Statement: [Metro Rail (Los Angeles), formerLine, L Line (Los Angeles Metro)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: L Line (Los Angeles Metro)
Context triple: [Metro Rail (Los Angeles), formerLine, L Line (Los Angeles Metro)]
  • A. 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.
  • B. LA Metro A Line
    The LA Metro A Line is a light rail line in Los Angeles County that connects downtown Los Angeles with several surrounding communities, including Pasadena and Long Beach.
  • C. Los Angeles Metro Rail
    Los Angeles Metro Rail is a rapid transit system serving Los Angeles County, California, consisting of multiple light rail and subway lines that connect key neighborhoods, business districts, and regional destinations.
  • D. Metro J Line
    The Metro J Line is a bus rapid transit service in Los Angeles County that provides high-frequency, limited-stop connections along key north-south and east-west corridors.
  • E. D Line (Los Angeles Metro)
    The D Line is a heavy-rail subway route in the Los Angeles Metro system that runs primarily beneath Wilshire Boulevard, connecting downtown Los Angeles with the city’s westside.
  • 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: L Line (Los Angeles Metro)
Triple: [Metro Rail (Los Angeles), formerLine, L Line (Los Angeles Metro)]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: L Line (Los Angeles Metro)
Target entity description: 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.
  • A. 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.
  • B. LA Metro A Line
    The LA Metro A Line is a light rail line in Los Angeles County that connects downtown Los Angeles with several surrounding communities, including Pasadena and Long Beach.
  • C. Los Angeles Metro Rail
    Los Angeles Metro Rail is a rapid transit system serving Los Angeles County, California, consisting of multiple light rail and subway lines that connect key neighborhoods, business districts, and regional destinations.
  • D. Metro J Line
    The Metro J Line is a bus rapid transit service in Los Angeles County that provides high-frequency, limited-stop connections along key north-south and east-west corridors.
  • E. D Line (Los Angeles Metro)
    The D Line is a heavy-rail subway route in the Los Angeles Metro system that runs primarily beneath Wilshire Boulevard, connecting downtown Los Angeles with the city’s westside.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: formerLine
Context triple: [Metro Rail (Los Angeles), formerLine, L Line (Los Angeles Metro)]
  • A. formerLineName
    Indicates that the object is a previous or former name by which the referenced line was known.
  • B. formerField
    Indicates that an entity previously had a particular field, role, or area of activity, but no longer does.
  • C. formerScript
    Indicates that an entity previously served as the script or writing system for another entity, but is no longer used in that role.
  • D. formerName
    Indicates that an entity was previously known by a different name in the past.
  • E. frontLine
    Indicates that an entity is positioned at or associated with the foremost or primary line of engagement, activity, or defense relative to others.
  • F. None of above. chosen

Provenance (7 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_69a8862bdb2081908aefe831c8aa8017 completed March 4, 2026, 7:21 p.m.
NER Named-entity recognition batch_69aba6a63f588190b53b39c6b97d74f4 completed March 7, 2026, 4:16 a.m.
NED1 Entity disambiguation (via context triple) batch_69addf39b08881908d798b3eae51dbae completed March 8, 2026, 8:42 p.m.
NEDg Description generation batch_69addfb3860481908ff4eebfa3d06fa7 completed March 8, 2026, 8:44 p.m.
NED2 Entity disambiguation (via description) batch_69ade027072481909b707bbfc47da4de completed March 8, 2026, 8:46 p.m.
PD Predicate disambiguation batch_69aa61c7ef4c8190abec87c96a787d82 completed March 6, 2026, 5:10 a.m.
PDg Predicate description generation batch_69aba6a4c84c8190b3ce0bf69c2b5f6d completed March 7, 2026, 4:16 a.m.
Created at: March 4, 2026, 7:31 p.m.