Triple

T21572843
Position Surface form Disambiguated ID Type / Status
Subject Harrisburg–Philadelphia–New York City E532325 entity
Predicate usedByService P1294 FINISHED
Object 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.
E1491905 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 (Philadelphia–New York City segment) | Statement: [Harrisburg–Philadelphia–New York City, usedByService, Northeast Regional (Philadelphia–New York City segment)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Northeast Regional (Philadelphia–New York City segment)
Context triple: [Harrisburg–Philadelphia–New York City, usedByService, Northeast Regional (Philadelphia–New York City segment)]
  • A. New York–Scranton corridor
    The New York–Scranton corridor is a historically significant rail route linking New York City with Scranton, Pennsylvania, that served as a key passenger and freight artery in the northeastern United States.
  • B. Buffalo–Scranton corridor
    The Buffalo–Scranton corridor is a historically significant organized-crime territory in the northeastern United States, spanning parts of upstate New York and northeastern Pennsylvania.
  • C. Philadelphia–Camden corridor
    The Philadelphia–Camden corridor is a major bi-state urban and transportation axis linking Philadelphia, Pennsylvania, with Camden, New Jersey, and surrounding communities.
  • D. Midwest–Northeast corridor
    The Midwest–Northeast corridor is a major U.S. passenger rail route linking Chicago with key cities in the Northeastern United States.
  • E. Baltimore–Philadelphia route
    The Baltimore–Philadelphia route is a historic rail corridor in the Mid-Atlantic United States that connects Baltimore, Maryland, with Philadelphia, Pennsylvania, and includes intermediate stops such as Elkton, Maryland.
  • 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 (Philadelphia–New York City segment)
Triple: [Harrisburg–Philadelphia–New York City, usedByService, Northeast Regional (Philadelphia–New York City segment)]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Northeast Regional (Philadelphia–New York City segment)
Target entity description: 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.
  • A. New York–Scranton corridor
    The New York–Scranton corridor is a historically significant rail route linking New York City with Scranton, Pennsylvania, that served as a key passenger and freight artery in the northeastern United States.
  • B. Buffalo–Scranton corridor
    The Buffalo–Scranton corridor is a historically significant organized-crime territory in the northeastern United States, spanning parts of upstate New York and northeastern Pennsylvania.
  • C. Philadelphia–Camden corridor
    The Philadelphia–Camden corridor is a major bi-state urban and transportation axis linking Philadelphia, Pennsylvania, with Camden, New Jersey, and surrounding communities.
  • D. Midwest–Northeast corridor
    The Midwest–Northeast corridor is a major U.S. passenger rail route linking Chicago with key cities in the Northeastern United States.
  • E. Baltimore–Philadelphia route
    The Baltimore–Philadelphia route is a historic rail corridor in the Mid-Atlantic United States that connects Baltimore, Maryland, with Philadelphia, Pennsylvania, and includes intermediate stops such as Elkton, Maryland.
  • 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_69e0c4618bec8190bcb0feb74568cbb1 completed April 16, 2026, 11:13 a.m.
NER Named-entity recognition batch_69eee9ce230c81909e12bd59497e2237 completed April 27, 2026, 4:45 a.m.
NED1 Entity disambiguation (via context triple) batch_6a09f672b5808190a2dd61c26ce64403 completed May 17, 2026, 5:10 p.m.
NEDg Description generation batch_6a09f78a3d788190b4b19f3b6463550e completed May 17, 2026, 5:14 p.m.
NED2 Entity disambiguation (via description) batch_6a09f825b02c819096f57b1dba02ded2 completed May 17, 2026, 5:17 p.m.
Created at: April 16, 2026, 6:30 p.m.