Triple

T13260357
Position Surface form Disambiguated ID Type / Status
Subject Siemens P2000 light rail vehicles E315775 entity
Predicate usedOnLine P15252 FINISHED
Object Los Angeles Metro Green Line
The Los Angeles Metro Green Line is an east–west light rail line in Los Angeles County that runs primarily along the median of the I-105 freeway, connecting Norwalk to Redondo Beach and serving as part of the Los Angeles Metro Rail system.
 E1037973 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: Los Angeles Metro Green Line | Statement: [Siemens P2000 light rail vehicles, usedOnLine, Los Angeles Metro Green Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Los Angeles Metro Green Line
Context triple: [Siemens P2000 light rail vehicles, usedOnLine, Los Angeles Metro Green Line]
  • A. G Line (Los Angeles Metro)
    The G Line (Los Angeles Metro) is a bus rapid transit route in Los Angeles’ San Fernando Valley that runs primarily along dedicated busways, providing high-frequency east–west service.
  • B. 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.
  • C. 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.
  • D. 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.
  • E. Expo Line (Los Angeles Metro)
    The Expo Line (Los Angeles Metro), now known as the E Line, is a light rail route in Los Angeles that connects Downtown Los Angeles to Santa Monica, serving major Westside neighborhoods and destinations.
  • 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: Los Angeles Metro Green Line
Triple: [Siemens P2000 light rail vehicles, usedOnLine, Los Angeles Metro Green Line]
Generated description
The Los Angeles Metro Green Line is an east–west light rail line in Los Angeles County that runs primarily along the median of the I-105 freeway, connecting Norwalk to Redondo Beach and serving as part of the Los Angeles Metro Rail system.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Los Angeles Metro Green Line
Target entity description: The Los Angeles Metro Green Line is an east–west light rail line in Los Angeles County that runs primarily along the median of the I-105 freeway, connecting Norwalk to Redondo Beach and serving as part of the Los Angeles Metro Rail system.
  • A. G Line (Los Angeles Metro)
    The G Line (Los Angeles Metro) is a bus rapid transit route in Los Angeles’ San Fernando Valley that runs primarily along dedicated busways, providing high-frequency east–west service.
  • B. 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.
  • C. 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.
  • D. 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.
  • E. Expo Line (Los Angeles Metro)
    The Expo Line (Los Angeles Metro), now known as the E Line, is a light rail route in Los Angeles that connects Downtown Los Angeles to Santa Monica, serving major Westside neighborhoods and destinations.
  • 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_69d806b1d9ac8190852c5571d5bd5f0f completed April 9, 2026, 8:06 p.m.
NER Named-entity recognition batch_69d98f778088819082b8a596c04bfe02 completed April 11, 2026, 12:01 a.m.
NED1 Entity disambiguation (via context triple) batch_69f7305c5f8081908bbe19f2a644acc5 completed May 3, 2026, 11:24 a.m.
NEDg Description generation batch_69f731093b0481908fb1a7b3fa14c73e completed May 3, 2026, 11:27 a.m.
NED2 Entity disambiguation (via description) batch_69f73186da9081908cec946610d745df completed May 3, 2026, 11:29 a.m.
Created at: April 9, 2026, 9:25 p.m.