Triple

T9166925
Position Surface form Disambiguated ID Type / Status
Subject Culver City station E219982 entity
Predicate formerLineName P17520 FINISHED
Object 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.
 E810033 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: Expo Line (Los Angeles Metro) | Statement: [Culver City station, formerLineName, Expo Line (Los Angeles Metro)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Expo Line (Los Angeles Metro)
Context triple: [Culver City station, formerLineName, Expo Line (Los Angeles Metro)]
  • A. Expo Line
    The Expo Line is a major automated rapid transit line in Metro Vancouver’s SkyTrain system, connecting downtown Vancouver with key suburban centres in Burnaby, New Westminster, and Surrey.
  • B. 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.
  • 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. 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.
  • E. 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.
  • 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: Expo Line (Los Angeles Metro)
Triple: [Culver City station, formerLineName, Expo Line (Los Angeles Metro)]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Expo Line (Los Angeles Metro)
Target entity description: 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.
  • A. Expo Line
    The Expo Line is a major automated rapid transit line in Metro Vancouver’s SkyTrain system, connecting downtown Vancouver with key suburban centres in Burnaby, New Westminster, and Surrey.
  • B. 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.
  • 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. 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.
  • E. 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.
  • 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_69ca83e467108190abcae6a33b3d4dad completed March 30, 2026, 2:08 p.m.
NER Named-entity recognition batch_69ccaade47cc81909b5c127dc8aa1340 completed April 1, 2026, 5:19 a.m.
NED1 Entity disambiguation (via context triple) batch_69d178be71188190bb9bdb719dd4d12d completed April 4, 2026, 8:46 p.m.
NEDg Description generation batch_69d17a5df01081909f20c4a722cef83d completed April 4, 2026, 8:53 p.m.
NED2 Entity disambiguation (via description) batch_69d17adb55648190b01060ade60b0fde completed April 4, 2026, 8:55 p.m.
Created at: March 30, 2026, 7:22 p.m.