Triple

T2995923
Position Surface form Disambiguated ID Type / Status
Subject B Line (Los Angeles Metro) E81065 entity
Predicate station P726 FINISHED
Object Union Station
Union Station is the main railway station and a major transportation hub in downtown Los Angeles, serving regional, intercity, and local transit lines.
 E13384 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: Union Station | Statement: [B Line (Los Angeles Metro), station, Union Station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Union Station
Context triple: [B Line (Los Angeles Metro), station, Union Station]
  • A. Union Station
    Union Station is a historic Beaux-Arts transportation hub and major intercity rail terminal in Washington, D.C., serving as a gateway to the U.S. capital.
  • B. Union Station
    Union Station is a major historic transportation hub in downtown Dallas that serves as a key rail and transit connection point for the city.
  • C. Union Station
    Union Station is a historic train station and transportation hub in Worcester, Massachusetts, known for its grand Beaux-Arts architecture and role as a key gateway to the city.
  • D. Union Station
    Union Station is Toronto’s primary railway and transit hub, connecting regional and intercity trains with the city’s subway and streetcar network.
  • E. Union Station
    Union Station is a historic train station name commonly used for major passenger rail terminals in several North American cities.
  • 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: Union Station
Triple: [B Line (Los Angeles Metro), station, Union Station]
Generated description
Union Station is the main railway station and a major transportation hub in downtown Los Angeles, serving regional, intercity, and local transit lines.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Union Station
Target entity description: Union Station is the main railway station and a major transportation hub in downtown Los Angeles, serving regional, intercity, and local transit lines.
  • A. Union Station chosen
    Union Station is the main railway station and a historic transportation hub in downtown Los Angeles, renowned for its Mission Revival and Art Deco architecture.
  • B. Union Station
    Union Station is a major historic transportation hub in downtown Dallas that serves as a key rail and transit connection point for the city.
  • C. Union Station
    Union Station is a historic Beaux-Arts transportation hub and major intercity rail terminal in Washington, D.C., serving as a gateway to the U.S. capital.
  • D. Union Station
    Union Station is a major historic train and transportation hub in Seattle, Washington, serving as a landmark of the city's rail and transit network.
  • E. Union Station
    Union Station is Toronto’s primary railway and transit hub, connecting regional and intercity trains with the city’s subway and streetcar network.
  • F. None of above.

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_69ad8b187fc8819085914d3c9ea3142d completed March 8, 2026, 2:43 p.m.
NER Named-entity recognition batch_69ad99f481688190ae8cd1e057f9dfc7 completed March 8, 2026, 3:47 p.m.
NED1 Entity disambiguation (via context triple) batch_69b12e3bac408190b09bafee840eb0d1 completed March 11, 2026, 8:56 a.m.
NEDg Description generation batch_69b1320a28808190b0f751eb6f198795 completed March 11, 2026, 9:12 a.m.
NED2 Entity disambiguation (via description) batch_69b1cb35a0048190bad4b190eb710ec1 completed March 11, 2026, 8:06 p.m.
Created at: March 8, 2026, 2:59 p.m.