Triple

T279607
Position Surface form Disambiguated ID Type / Status
Subject Buenos Aires E5323 entity
Predicate hasMetroSystem P522 FINISHED
Object Buenos Aires Underground
Buenos Aires Underground is the rapid transit system serving Argentina’s capital, known as the oldest subway network in Latin America and a key component of the city’s public transportation.
 E36731 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: Buenos Aires Underground | Statement: [Buenos Aires, hasMetroSystem, Buenos Aires Underground]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Buenos Aires Underground
Context triple: [Buenos Aires, hasMetroSystem, Buenos Aires Underground]
  • A. O’Higgins Station
    O’Higgins Station is a Chilean Antarctic research base located on the Antarctic Peninsula, used primarily for scientific studies and maintaining Chile’s presence in the region.
  • B. Melena del Sur
    Melena del Sur is a coastal municipality in western Cuba known for its agricultural activities and proximity to Havana.
  • C. Muni
    Muni is San Francisco’s primary public transit agency, operating buses, light rail, historic streetcars, and the city’s iconic cable cars.
  • D. Santiago Metro
    Santiago Metro is the rapid transit system serving Chile's capital, known as one of Latin America’s largest and most extensive urban rail networks.
  • E. Buenos Aires
    Buenos Aires is the capital and largest city of Argentina, known for its rich European-influenced culture, tango music and dance, and vibrant urban life.
  • 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: Buenos Aires Underground
Triple: [Buenos Aires, hasMetroSystem, Buenos Aires Underground]
Generated description
Buenos Aires Underground is the rapid transit system serving Argentina’s capital, known as the oldest subway network in Latin America and a key component of the city’s public transportation.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Buenos Aires Underground
Target entity description: Buenos Aires Underground is the rapid transit system serving Argentina’s capital, known as the oldest subway network in Latin America and a key component of the city’s public transportation.
  • A. O’Higgins Station
    O’Higgins Station is a Chilean Antarctic research base located on the Antarctic Peninsula, used primarily for scientific studies and maintaining Chile’s presence in the region.
  • B. Melena del Sur
    Melena del Sur is a coastal municipality in western Cuba known for its agricultural activities and proximity to Havana.
  • C. Muni
    Muni is San Francisco’s primary public transit agency, operating buses, light rail, historic streetcars, and the city’s iconic cable cars.
  • D. Santiago Metro
    Santiago Metro is the rapid transit system serving Chile's capital, known as one of Latin America’s largest and most extensive urban rail networks.
  • E. Buenos Aires
    Buenos Aires is the capital and largest city of Argentina, known for its rich European-influenced culture, tango music and dance, and vibrant urban life.
  • 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_69a257e6c8788190987dfe705ca2912a completed Feb. 28, 2026, 2:50 a.m.
NER Named-entity recognition batch_69a25def95c48190bb8ab2259f67b583 completed Feb. 28, 2026, 3:15 a.m.
NED1 Entity disambiguation (via context triple) batch_69a399a5913c819082fac6bb344bd585 completed March 1, 2026, 1:43 a.m.
NEDg Description generation batch_69a39a42ae04819094f90652cd1c89fe completed March 1, 2026, 1:45 a.m.
NED2 Entity disambiguation (via description) batch_69a39bdf26fc81908e0617ccf3ae36d1 completed March 1, 2026, 1:52 a.m.
Created at: Feb. 28, 2026, 2:59 a.m.