Triple

T23317099
Position Surface form Disambiguated ID Type / Status
Subject Norfolk station E590738 entity
Predicate servesAsTerminusFor P388 FINISHED
Object Northeast Regional service to Washington, D.C.
The Northeast Regional service to Washington, D.C. is an Amtrak intercity passenger train route that connects Washington, D.C. with cities along the East Coast, including its southern terminus at Norfolk, Virginia.
E1580957 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 Regional service to Washington, D.C. | Statement: [Norfolk station, servesAsTerminusFor, Northeast Regional service to Washington, D.C.]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Northeast Regional service to Washington, D.C.
Context triple: [Norfolk station, servesAsTerminusFor, Northeast Regional service to Washington, D.C.]
  • A. Northeast Regional Boston services
    Northeast Regional Boston services are Amtrak’s intercity passenger train routes that connect Boston’s South Station with major cities along the Northeast Corridor, including New York City and Washington, D.C.
  • B. Northeast Washington, D.C.
    Northeast Washington, D.C. is a largely residential quadrant of the U.S. capital that includes historic neighborhoods, commercial corridors, and parts of the city’s political and cultural core.
  • C. Northeast Regional (Boston terminus)
    The Northeast Regional (Boston terminus) is an Amtrak intercity rail service that operates along the Northeast Corridor, with its Boston-bound trains ending their journey at South Station.
  • D. Northeast Regional (Philadelphia–New York City segment)
    The Northeast Regional (Philadelphia–New York City segment) is an Amtrak intercity rail service that provides frequent, medium-distance passenger trains connecting Philadelphia with New York City along the busy Northeast Corridor.
  • E. New York City–Washington, D.C.
    New York City–Washington, D.C. refers to the heavily traveled, fully electrified segment of the Northeast Corridor rail line connecting the two major East Coast 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: Northeast Regional service to Washington, D.C.
Triple: [Norfolk station, servesAsTerminusFor, Northeast Regional service to Washington, D.C.]
Generated description
The Northeast Regional service to Washington, D.C. is an Amtrak intercity passenger train route that connects Washington, D.C. with cities along the East Coast, including its southern terminus at Norfolk, Virginia.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Northeast Regional service to Washington, D.C.
Target entity description: The Northeast Regional service to Washington, D.C. is an Amtrak intercity passenger train route that connects Washington, D.C. with cities along the East Coast, including its southern terminus at Norfolk, Virginia.
  • A. Northeast Regional Boston services
    Northeast Regional Boston services are Amtrak’s intercity passenger train routes that connect Boston’s South Station with major cities along the Northeast Corridor, including New York City and Washington, D.C.
  • B. Northeast Washington, D.C.
    Northeast Washington, D.C. is a largely residential quadrant of the U.S. capital that includes historic neighborhoods, commercial corridors, and parts of the city’s political and cultural core.
  • C. Northeast Regional (Boston terminus)
    The Northeast Regional (Boston terminus) is an Amtrak intercity rail service that operates along the Northeast Corridor, with its Boston-bound trains ending their journey at South Station.
  • D. Northeast Regional (Philadelphia–New York City segment)
    The Northeast Regional (Philadelphia–New York City segment) is an Amtrak intercity rail service that provides frequent, medium-distance passenger trains connecting Philadelphia with New York City along the busy Northeast Corridor.
  • E. New York City–Washington, D.C.
    New York City–Washington, D.C. refers to the heavily traveled, fully electrified segment of the Northeast Corridor rail line connecting the two major East Coast cities.
  • 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_69e25d1d32188190948eb76909d1dcc3 completed April 17, 2026, 4:17 p.m.
NER Named-entity recognition batch_69f197828c408190ae071624e40de4cc completed April 29, 2026, 5:30 a.m.
NED1 Entity disambiguation (via context triple) batch_6a0c4ca60aac819088dafd529a37d2e3 completed May 19, 2026, 11:42 a.m.
NEDg Description generation batch_6a0c4f37e390819083df9a959acf3a32 completed May 19, 2026, 11:53 a.m.
NED2 Entity disambiguation (via description) batch_6a0c4fdafde88190a7ac791189acde68 completed May 19, 2026, 11:56 a.m.
Created at: April 17, 2026, 5:06 p.m.