Triple

T5484772
Position Surface form Disambiguated ID Type / Status
Subject Mid-Corridor Trench E123551 entity
Predicate associatedWith P37 FINISHED
Object Alameda Corridor Transportation Authority
The Alameda Corridor Transportation Authority is a public agency that developed and manages the Alameda Corridor freight rail expressway linking the Ports of Los Angeles and Long Beach to the national rail network.
 E522653 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: Alameda Corridor Transportation Authority | Statement: [Mid-Corridor Trench, associatedWith, Alameda Corridor Transportation Authority]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Alameda Corridor Transportation Authority
Context triple: [Mid-Corridor Trench, associatedWith, Alameda Corridor Transportation Authority]
  • A. Los Angeles County Metropolitan Transportation Authority
    The Los Angeles County Metropolitan Transportation Authority is the primary public transit agency for Los Angeles County, operating and overseeing the region’s bus and rail systems.
  • B. Santa Clara Valley Transportation Authority
    The Santa Clara Valley Transportation Authority is the public transit agency that operates bus, light rail, and related transportation services throughout Santa Clara County in California’s Silicon Valley.
  • C. Sacramento Regional Transit
    Sacramento Regional Transit is the public transportation agency serving the Sacramento, California metropolitan area with light rail and bus services.
  • D. Solano Transportation Authority
    Solano Transportation Authority is a public agency that plans, funds, and coordinates transportation projects and services within Solano County, California.
  • E. Alameda Corridor
    The Alameda Corridor is a 20-mile freight rail expressway in Los Angeles County that consolidates and streamlines cargo movement between the region’s ports and the national rail network.
  • 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: Alameda Corridor Transportation Authority
Triple: [Mid-Corridor Trench, associatedWith, Alameda Corridor Transportation Authority]
Generated description
The Alameda Corridor Transportation Authority is a public agency that developed and manages the Alameda Corridor freight rail expressway linking the Ports of Los Angeles and Long Beach to the national rail network.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Alameda Corridor Transportation Authority
Target entity description: The Alameda Corridor Transportation Authority is a public agency that developed and manages the Alameda Corridor freight rail expressway linking the Ports of Los Angeles and Long Beach to the national rail network.
  • A. Los Angeles County Metropolitan Transportation Authority
    The Los Angeles County Metropolitan Transportation Authority is the primary public transit agency for Los Angeles County, operating and overseeing the region’s bus and rail systems.
  • B. Santa Clara Valley Transportation Authority
    The Santa Clara Valley Transportation Authority is the public transit agency that operates bus, light rail, and related transportation services throughout Santa Clara County in California’s Silicon Valley.
  • C. Sacramento Regional Transit
    Sacramento Regional Transit is the public transportation agency serving the Sacramento, California metropolitan area with light rail and bus services.
  • D. Solano Transportation Authority
    Solano Transportation Authority is a public agency that plans, funds, and coordinates transportation projects and services within Solano County, California.
  • E. Alameda Corridor
    The Alameda Corridor is a 20-mile freight rail expressway in Los Angeles County that consolidates and streamlines cargo movement between the region’s ports and the national rail network.
  • 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_69bd4648883481909e9775d43300c5fa completed March 20, 2026, 1:06 p.m.
NER Named-entity recognition batch_69bd9260d90c819087f34ab24662575d completed March 20, 2026, 6:30 p.m.
NED1 Entity disambiguation (via context triple) batch_69bf48a773f48190b9928a96ae2c17f8 completed March 22, 2026, 1:40 a.m.
NEDg Description generation batch_69bf49ae98dc81909d410d886163a98d completed March 22, 2026, 1:45 a.m.
NED2 Entity disambiguation (via description) batch_69bf4a373d8881908bb704eafb50b5b9 completed March 22, 2026, 1:47 a.m.
Created at: March 20, 2026, 2:10 p.m.