Triple

T3305970
Position Surface form Disambiguated ID Type / Status
Subject Portland, Maine E69449 entity
Predicate hasRailService P782 FINISHED
Object Amtrak Downeaster
Amtrak Downeaster is a passenger rail service operated by Amtrak that connects Boston with several communities in Maine and New Hampshire.
E347183 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 Downeaster | Statement: [Portland, Maine, hasRailService, Amtrak Downeaster]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Amtrak Downeaster
Context triple: [Portland, Maine, hasRailService, Amtrak Downeaster]
  • A. Amtrak Ethan Allen Express
    The Amtrak Ethan Allen Express is an intercity passenger train service that operates between New York City and Vermont, providing a key rail connection through the Hudson Valley and upstate New York.
  • B. Amtrak Northeast Regional
    Amtrak Northeast Regional is a passenger rail service that provides frequent intercity connections between major cities in the northeastern United States, including Boston, New York, Philadelphia, and Washington, D.C.
  • C. Amtrak Crescent
    Amtrak Crescent is a long-distance passenger train operated by Amtrak that runs daily between New York City and New Orleans, serving major cities along the U.S. East Coast and Deep South.
  • D. Amtrak Vermonter
    Amtrak Vermonter is a daily intercity passenger train operated by Amtrak that runs between Washington, D.C., and St. Albans, Vermont, serving major cities along the Northeast Corridor and into northern New England.
  • E. Amtrak Keystone Service
    Amtrak Keystone Service is a passenger rail service operated by Amtrak that runs primarily between New York City and Harrisburg, Pennsylvania, providing frequent regional connections along the Keystone Corridor.
  • 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 Downeaster
Triple: [Portland, Maine, hasRailService, Amtrak Downeaster]
Generated description
Amtrak Downeaster is a passenger rail service operated by Amtrak that connects Boston with several communities in Maine and New Hampshire.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Amtrak Downeaster
Target entity description: Amtrak Downeaster is a passenger rail service operated by Amtrak that connects Boston with several communities in Maine and New Hampshire.
  • A. Amtrak Ethan Allen Express
    The Amtrak Ethan Allen Express is an intercity passenger train service that operates between New York City and Vermont, providing a key rail connection through the Hudson Valley and upstate New York.
  • B. Amtrak Northeast Regional
    Amtrak Northeast Regional is a passenger rail service that provides frequent intercity connections between major cities in the northeastern United States, including Boston, New York, Philadelphia, and Washington, D.C.
  • C. Amtrak Crescent
    Amtrak Crescent is a long-distance passenger train operated by Amtrak that runs daily between New York City and New Orleans, serving major cities along the U.S. East Coast and Deep South.
  • D. Amtrak Vermonter
    Amtrak Vermonter is a daily intercity passenger train operated by Amtrak that runs between Washington, D.C., and St. Albans, Vermont, serving major cities along the Northeast Corridor and into northern New England.
  • E. Amtrak Keystone Service
    Amtrak Keystone Service is a passenger rail service operated by Amtrak that runs primarily between New York City and Harrisburg, Pennsylvania, providing frequent regional connections along the Keystone Corridor.
  • 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_69ad859f218081909458d2cebbf57565 completed March 8, 2026, 2:20 p.m.
NER Named-entity recognition batch_69adb0c9470881908c36c1984fdbb67b completed March 8, 2026, 5:24 p.m.
NED1 Entity disambiguation (via context triple) batch_69b2f3e6e55881909417d54e0d8f0a26 completed March 12, 2026, 5:12 p.m.
NEDg Description generation batch_69b2fa93ebc0819084c4cdfdb8d6e48d completed March 12, 2026, 5:40 p.m.
NED2 Entity disambiguation (via description) batch_69b312b6e224819080957998acbed524 completed March 12, 2026, 7:23 p.m.
Created at: March 8, 2026, 3:11 p.m.