Triple

T8599484
Position Surface form Disambiguated ID Type / Status
Subject D Line (Los Angeles Metro) E203637 entity
Predicate openedAsPartOf P9951 FINISHED
Object Metro Red Line
The Metro Red Line was the original heavy-rail subway corridor in Los Angeles that later became the basis for the current D Line service.
 E751923 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 Red Line | Statement: [D Line (Los Angeles Metro), openedAsPartOf, Metro Red Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Metro Red Line
Context triple: [D Line (Los Angeles Metro), openedAsPartOf, Metro Red Line]
  • A. RTA Red Line
    The RTA Red Line is a heavy rail rapid transit route in Cleveland, Ohio, running between Cleveland Hopkins International Airport and the Windermere station in East Cleveland.
  • B. The Red Line
    The Red Line is an American television drama miniseries that follows the intersecting lives of three Chicago families after a white police officer shoots an unarmed Black doctor, and is known for starring Noah Wyle.
  • C. 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.
  • D. METRORail Red Line
    The METRORail Red Line is a light rail line in Houston, Texas, running through key central areas including downtown and the Museum District.
  • E. CTA Red Line
    The CTA Red Line is a major rapid transit route in Chicago that runs north–south through the city, including service through the downtown Loop.
  • 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 Red Line
Triple: [D Line (Los Angeles Metro), openedAsPartOf, Metro Red Line]
Generated description
The Metro Red Line was the original heavy-rail subway corridor in Los Angeles that later became the basis for the current D Line service.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Metro Red Line
Target entity description: The Metro Red Line was the original heavy-rail subway corridor in Los Angeles that later became the basis for the current D Line service.
  • A. RTA Red Line
    The RTA Red Line is a heavy rail rapid transit route in Cleveland, Ohio, running between Cleveland Hopkins International Airport and the Windermere station in East Cleveland.
  • B. The Red Line
    The Red Line is an American television drama miniseries that follows the intersecting lives of three Chicago families after a white police officer shoots an unarmed Black doctor, and is known for starring Noah Wyle.
  • C. 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.
  • D. METRORail Red Line
    The METRORail Red Line is a light rail line in Houston, Texas, running through key central areas including downtown and the Museum District.
  • E. CTA Red Line
    The CTA Red Line is a major rapid transit route in Chicago that runs north–south through the city, including service through the downtown Loop.
  • 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_69ca832b56948190ba751cec255308f1 completed March 30, 2026, 2:05 p.m.
NER Named-entity recognition batch_69cc46d7c184819083236c75f9ccc9cf completed March 31, 2026, 10:12 p.m.
NED1 Entity disambiguation (via context triple) batch_69cef33f0aa0819091e101f822c53c0f completed April 2, 2026, 10:52 p.m.
NEDg Description generation batch_69cef52000048190bc5451cfb6446ced completed April 2, 2026, 11 p.m.
NED2 Entity disambiguation (via description) batch_69cef809df548190b4f9ecc709b3b065 completed April 2, 2026, 11:13 p.m.
Created at: March 30, 2026, 6:24 p.m.