Triple

T2287737
Position Surface form Disambiguated ID Type / Status
Subject Tren Urbano E51431 entity
Predicate hasStation P35 FINISHED
Object Hato Rey station
Hato Rey station is a rapid transit stop on San Juan, Puerto Rico’s Tren Urbano system serving the Hato Rey financial and commercial district.
 E257770 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: Hato Rey station | Statement: [Tren Urbano, hasStation, Hato Rey station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Hato Rey station
Context triple: [Tren Urbano, hasStation, Hato Rey station]
  • A. Bayamón station
    Bayamón station is a major rapid transit station in Bayamón, Puerto Rico, serving as the western endpoint of the San Juan metropolitan area's Tren Urbano system.
  • B. Castro Muni Metro Station
    Castro Muni Metro Station is an underground light-rail station on San Francisco’s Muni Metro system that serves as a key transit hub for the historic and LGBTQ+ landmark Castro District.
  • C. Bayside station
    Bayside station is a Long Island Rail Road commuter rail stop in the Bayside neighborhood of Queens, New York City.
  • D. Retiro station
    Retiro station is a major Buenos Aires Underground terminus and transport hub located in the Retiro district of Argentina’s capital.
  • E. San Carlos station
    San Carlos station is a commuter rail station in San Carlos, California, serving Caltrain passengers on the San Francisco Peninsula.
  • 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: Hato Rey station
Triple: [Tren Urbano, hasStation, Hato Rey station]
Generated description
Hato Rey station is a rapid transit stop on San Juan, Puerto Rico’s Tren Urbano system serving the Hato Rey financial and commercial district.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Hato Rey station
Target entity description: Hato Rey station is a rapid transit stop on San Juan, Puerto Rico’s Tren Urbano system serving the Hato Rey financial and commercial district.
  • A. Bayamón station
    Bayamón station is a major rapid transit station in Bayamón, Puerto Rico, serving as the western endpoint of the San Juan metropolitan area's Tren Urbano system.
  • B. Castro Muni Metro Station
    Castro Muni Metro Station is an underground light-rail station on San Francisco’s Muni Metro system that serves as a key transit hub for the historic and LGBTQ+ landmark Castro District.
  • C. Bayside station
    Bayside station is a Long Island Rail Road commuter rail stop in the Bayside neighborhood of Queens, New York City.
  • D. Retiro station
    Retiro station is a major Buenos Aires Underground terminus and transport hub located in the Retiro district of Argentina’s capital.
  • E. San Carlos station
    San Carlos station is a commuter rail station in San Carlos, California, serving Caltrain passengers on the San Francisco Peninsula.
  • 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_69a88b09c644819090b503456d96bf70 completed March 4, 2026, 7:42 p.m.
NER Named-entity recognition batch_69abc24868048190940512fd6449d99e completed March 7, 2026, 6:14 a.m.
NED1 Entity disambiguation (via context triple) batch_69ae96080548819098ae6c5ab73036f2 completed March 9, 2026, 9:42 a.m.
NEDg Description generation batch_69ae96d95c648190bca59f97c01e59fc completed March 9, 2026, 9:46 a.m.
NED2 Entity disambiguation (via description) batch_69ae974d062c819091459361f519ee3e completed March 9, 2026, 9:47 a.m.
Created at: March 4, 2026, 7:48 p.m.