Triple

T2851853
Position Surface form Disambiguated ID Type / Status
Subject LA Metro A Line E63109 entity
Predicate connectsWith P37 FINISHED
Object Amtrak services at Los Angeles Union Station
Amtrak services at Los Angeles Union Station comprise a major hub of intercity passenger rail routes linking Los Angeles with regional and long-distance destinations across California and the United States.
 E303686 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: Amtrak services at Los Angeles Union Station | Statement: [LA Metro A Line, connectsWith, Amtrak services at Los Angeles Union Station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Amtrak services at Los Angeles Union Station
Context triple: [LA Metro A Line, connectsWith, Amtrak services at Los Angeles Union Station]
  • A. Amtrak services at Chicago Union Station
    Amtrak services at Chicago Union Station comprise a major hub of intercity passenger rail routes connecting Chicago with numerous destinations across the United States.
  • B. Amtrak Sacramento Valley Station
    Amtrak Sacramento Valley Station is the main intercity passenger rail station in Sacramento, California, serving Amtrak trains and regional transit connections.
  • C. Metrolink at Union Station
    Metrolink at Union Station is the Southern California regional commuter rail service hub located at Los Angeles Union Station, providing connections between multiple counties and local transit lines.
  • D. Madera Amtrak station
    Madera Amtrak station is a passenger rail station in Madera, California, served by Amtrak’s San Joaquins route in the San Joaquin Valley.
  • E. Long Beach–Penn Station trains
    Long Beach–Penn Station trains are Long Island Rail Road commuter services that connect Long Beach on Long Island’s South Shore with New York City’s Pennsylvania Station.
  • 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: Amtrak services at Los Angeles Union Station
Triple: [LA Metro A Line, connectsWith, Amtrak services at Los Angeles Union Station]
Generated description
Amtrak services at Los Angeles Union Station comprise a major hub of intercity passenger rail routes linking Los Angeles with regional and long-distance destinations across California and the United States.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Amtrak services at Los Angeles Union Station
Target entity description: Amtrak services at Los Angeles Union Station comprise a major hub of intercity passenger rail routes linking Los Angeles with regional and long-distance destinations across California and the United States.
  • A. Amtrak services at Chicago Union Station
    Amtrak services at Chicago Union Station comprise a major hub of intercity passenger rail routes connecting Chicago with numerous destinations across the United States.
  • B. Amtrak Sacramento Valley Station
    Amtrak Sacramento Valley Station is the main intercity passenger rail station in Sacramento, California, serving Amtrak trains and regional transit connections.
  • C. Metrolink at Union Station
    Metrolink at Union Station is the Southern California regional commuter rail service hub located at Los Angeles Union Station, providing connections between multiple counties and local transit lines.
  • D. Madera Amtrak station
    Madera Amtrak station is a passenger rail station in Madera, California, served by Amtrak’s San Joaquins route in the San Joaquin Valley.
  • E. Long Beach–Penn Station trains
    Long Beach–Penn Station trains are Long Island Rail Road commuter services that connect Long Beach on Long Island’s South Shore with New York City’s Pennsylvania Station.
  • 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_69ab4c407c408190857d25e027155ce9 completed March 6, 2026, 9:50 p.m.
NER Named-entity recognition batch_69abdf5ca2648190bd32c6ec4b0dd3b6 completed March 7, 2026, 8:18 a.m.
NED1 Entity disambiguation (via context triple) batch_69afe8e4e0b881908de5c4927609725e completed March 10, 2026, 9:48 a.m.
NEDg Description generation batch_69afe98243508190837853fa2c08e44a completed March 10, 2026, 9:50 a.m.
NED2 Entity disambiguation (via description) batch_69b008b519bc81908768fba43c5c8d5e completed March 10, 2026, 12:04 p.m.
Created at: March 6, 2026, 10:02 p.m.