Triple

T20179314
Position Surface form Disambiguated ID Type / Status
Subject Twin Cities Zephyr E492682 entity
Predicate operatedOnRoute P21808 FINISHED
Object Chicago–Twin Cities corridor
The Chicago–Twin Cities corridor is a major passenger and freight rail route linking Chicago, Illinois, with the Minneapolis–Saint Paul metropolitan area in Minnesota.
E1417787 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: Chicago–Twin Cities corridor | Statement: [Twin Cities Zephyr, operatedOnRoute, Chicago–Twin Cities corridor]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Chicago–Twin Cities corridor
Context triple: [Twin Cities Zephyr, operatedOnRoute, Chicago–Twin Cities corridor]
  • A. Chicago–Milwaukee metropolitan corridor
    The Chicago–Milwaukee metropolitan corridor is a heavily urbanized and economically integrated region stretching along Lake Michigan between Chicago, Illinois, and Milwaukee, Wisconsin.
  • B. Minneapolis–Bloomington corridor
    The Minneapolis–Bloomington corridor is a major urban transit and development axis in Minnesota linking downtown Minneapolis with the city of Bloomington and key destinations such as the Mall of America.
  • C. Chicago–St. Louis corridor
    The Chicago–St. Louis corridor is a major Midwestern passenger rail route linking Chicago, Illinois, with St. Louis, Missouri, and serving as a key segment of Amtrak’s intercity service.
  • D. Chicago–Quad Cities corridor
    The Chicago–Quad Cities corridor is a major transportation and economic link in northern Illinois connecting the Chicago metropolitan area with the Quad Cities region along the Mississippi River.
  • E. Chicago–Ann Arbor corridor
    The Chicago–Ann Arbor corridor is a key Midwestern passenger rail route linking Chicago, Illinois with Ann Arbor, Michigan and other intermediate 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: Chicago–Twin Cities corridor
Triple: [Twin Cities Zephyr, operatedOnRoute, Chicago–Twin Cities corridor]
Generated description
The Chicago–Twin Cities corridor is a major passenger and freight rail route linking Chicago, Illinois, with the Minneapolis–Saint Paul metropolitan area in Minnesota.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Chicago–Twin Cities corridor
Target entity description: The Chicago–Twin Cities corridor is a major passenger and freight rail route linking Chicago, Illinois, with the Minneapolis–Saint Paul metropolitan area in Minnesota.
  • A. Chicago–Milwaukee metropolitan corridor
    The Chicago–Milwaukee metropolitan corridor is a heavily urbanized and economically integrated region stretching along Lake Michigan between Chicago, Illinois, and Milwaukee, Wisconsin.
  • B. Minneapolis–Bloomington corridor
    The Minneapolis–Bloomington corridor is a major urban transit and development axis in Minnesota linking downtown Minneapolis with the city of Bloomington and key destinations such as the Mall of America.
  • C. Chicago–St. Louis corridor
    The Chicago–St. Louis corridor is a major Midwestern passenger rail route linking Chicago, Illinois, with St. Louis, Missouri, and serving as a key segment of Amtrak’s intercity service.
  • D. Chicago–Quad Cities corridor
    The Chicago–Quad Cities corridor is a major transportation and economic link in northern Illinois connecting the Chicago metropolitan area with the Quad Cities region along the Mississippi River.
  • E. Chicago–Ann Arbor corridor
    The Chicago–Ann Arbor corridor is a key Midwestern passenger rail route linking Chicago, Illinois with Ann Arbor, Michigan and other intermediate 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_69da6268a034819081cbd9ea5a1c9475 completed April 11, 2026, 3:02 p.m.
NER Named-entity recognition batch_69e668edf27881909820f9103e72533e completed April 20, 2026, 5:57 p.m.
NED1 Entity disambiguation (via context triple) batch_6a0843e0c99c8190972a7120b8beaa87 completed May 16, 2026, 10:16 a.m.
NEDg Description generation batch_6a0844b2ef688190908b9ad5cf554907 completed May 16, 2026, 10:19 a.m.
NED2 Entity disambiguation (via description) batch_6a0845e473088190a9a87fc83ece73d5 completed May 16, 2026, 10:24 a.m.
Created at: April 11, 2026, 11:36 p.m.