Triple

T15318541
Position Surface form Disambiguated ID Type / Status
Subject RF&P Subdivision E366225 entity
Predicate formsPartOfCorridor P2566 FINISHED
Object Northeast Corridor extension to Virginia
The Northeast Corridor extension to Virginia is the southern continuation of Amtrak’s primary high-speed rail route, carrying intercity and commuter trains from Washington, D.C. through northern and central Virginia.
E1150414 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: Northeast Corridor extension to Virginia | Statement: [RF&P Subdivision, formsPartOfCorridor, Northeast Corridor extension to Virginia]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Northeast Corridor extension to Virginia
Context triple: [RF&P Subdivision, formsPartOfCorridor, Northeast Corridor extension to Virginia]
  • A. Northeast Corridor Improvement Program
    The Northeast Corridor Improvement Program was a major U.S. rail infrastructure initiative launched in the 1970s to modernize and upgrade the heavily used passenger rail line between Boston, New York, and Washington, D.C.
  • B. Southeast Corridor
    The Southeast Corridor is a key passenger rail route in the southeastern United States served by Amtrak’s Carolinian train.
  • C. Northeast Corridor electrified services
    Northeast Corridor electrified services are high-speed, overhead-wire-powered passenger rail operations along the busy Boston–Washington, D.C. corridor, primarily using electric locomotives and electric multiple units rather than bi-level Superliner cars.
  • D. Virginia Railway Express
    Virginia Railway Express is a commuter rail service that connects Northern Virginia suburbs with Washington, D.C., primarily serving daily work commuters.
  • E. RTD Southeast Corridor
    RTD Southeast Corridor is a major light rail corridor in the Denver metropolitan area that connects downtown Denver with its southeastern suburbs and business districts.
  • 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: Northeast Corridor extension to Virginia
Triple: [RF&P Subdivision, formsPartOfCorridor, Northeast Corridor extension to Virginia]
Generated description
The Northeast Corridor extension to Virginia is the southern continuation of Amtrak’s primary high-speed rail route, carrying intercity and commuter trains from Washington, D.C. through northern and central Virginia.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Northeast Corridor extension to Virginia
Target entity description: The Northeast Corridor extension to Virginia is the southern continuation of Amtrak’s primary high-speed rail route, carrying intercity and commuter trains from Washington, D.C. through northern and central Virginia.
  • A. Northeast Corridor Improvement Program
    The Northeast Corridor Improvement Program was a major U.S. rail infrastructure initiative launched in the 1970s to modernize and upgrade the heavily used passenger rail line between Boston, New York, and Washington, D.C.
  • B. Southeast Corridor
    The Southeast Corridor is a key passenger rail route in the southeastern United States served by Amtrak’s Carolinian train.
  • C. Northeast Corridor electrified services
    Northeast Corridor electrified services are high-speed, overhead-wire-powered passenger rail operations along the busy Boston–Washington, D.C. corridor, primarily using electric locomotives and electric multiple units rather than bi-level Superliner cars.
  • D. Virginia Railway Express
    Virginia Railway Express is a commuter rail service that connects Northern Virginia suburbs with Washington, D.C., primarily serving daily work commuters.
  • E. RTD Southeast Corridor
    RTD Southeast Corridor is a major light rail corridor in the Denver metropolitan area that connects downtown Denver with its southeastern suburbs and business districts.
  • 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_69d85a121520819093dcce999fdefe1a completed April 10, 2026, 2:01 a.m.
NER Named-entity recognition batch_69e03dd356b881908f054b64eee6a371 completed April 16, 2026, 1:39 a.m.
NED1 Entity disambiguation (via context triple) batch_69fef8a9085881909904152c32b0fed1 completed May 9, 2026, 9:04 a.m.
NEDg Description generation batch_69fefc8251d08190bf8a764f83f89d7e completed May 9, 2026, 9:21 a.m.
NED2 Entity disambiguation (via description) batch_69fefd6c2bf88190b17a03be7b3353e3 completed May 9, 2026, 9:25 a.m.
Created at: April 10, 2026, 3:16 a.m.