Triple

T8542987
Position Surface form Disambiguated ID Type / Status
Subject Capitol Limited (historical) E202241 entity
Predicate primaryRoute P6298 FINISHED
Object Washington, D.C.–Chicago route
The Washington, D.C.–Chicago route is a major intercity passenger rail corridor linking the U.S. capital with the Midwest hub of Chicago, historically served by trains such as the Capitol Limited.
E740678 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: Washington, D.C.–Chicago route | Statement: [Capitol Limited (historical), primaryRoute, Washington, D.C.–Chicago route]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Washington, D.C.–Chicago route
Context triple: [Capitol Limited (historical), primaryRoute, Washington, D.C.–Chicago route]
  • A. Pittsburgh–Chicago route
    The Pittsburgh–Chicago route was a major Pennsylvania Railroad passenger and freight corridor linking the industrial centers of Pittsburgh, Pennsylvania, and Chicago, Illinois.
  • B. Chicago–Cleveland route
    The Chicago–Cleveland route is a major Midwestern rail corridor that historically linked Chicago, Illinois, with Cleveland, Ohio, serving as a key segment for passenger and freight traffic across the Great Lakes region.
  • C. New York–St. Louis route
    The New York–St. Louis route was a major intercity passenger and freight rail corridor in the United States that connected the East Coast with the Midwest.
  • D. Chicago–Indianapolis corridor
    The Chicago–Indianapolis corridor is a major Midwestern transportation route linking the metropolitan hubs of Chicago, Illinois and Indianapolis, Indiana by highway and rail.
  • E. Chicago–Pacific Northwest route
    The Chicago–Pacific Northwest route was a major transcontinental rail corridor linking Chicago with cities in the Pacific Northwest, historically operated by the Milwaukee Road.
  • 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: Washington, D.C.–Chicago route
Triple: [Capitol Limited (historical), primaryRoute, Washington, D.C.–Chicago route]
Generated description
The Washington, D.C.–Chicago route is a major intercity passenger rail corridor linking the U.S. capital with the Midwest hub of Chicago, historically served by trains such as the Capitol Limited.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Washington, D.C.–Chicago route
Target entity description: The Washington, D.C.–Chicago route is a major intercity passenger rail corridor linking the U.S. capital with the Midwest hub of Chicago, historically served by trains such as the Capitol Limited.
  • A. Pittsburgh–Chicago route
    The Pittsburgh–Chicago route was a major Pennsylvania Railroad passenger and freight corridor linking the industrial centers of Pittsburgh, Pennsylvania, and Chicago, Illinois.
  • B. Chicago–Cleveland route
    The Chicago–Cleveland route is a major Midwestern rail corridor that historically linked Chicago, Illinois, with Cleveland, Ohio, serving as a key segment for passenger and freight traffic across the Great Lakes region.
  • C. New York–St. Louis route
    The New York–St. Louis route was a major intercity passenger and freight rail corridor in the United States that connected the East Coast with the Midwest.
  • D. Chicago–Indianapolis corridor
    The Chicago–Indianapolis corridor is a major Midwestern transportation route linking the metropolitan hubs of Chicago, Illinois and Indianapolis, Indiana by highway and rail.
  • E. Chicago–Pacific Northwest route
    The Chicago–Pacific Northwest route was a major transcontinental rail corridor linking Chicago with cities in the Pacific Northwest, historically operated by the Milwaukee Road.
  • 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_69ca832461e88190a654c5e44e233aa8 completed March 30, 2026, 2:05 p.m.
NER Named-entity recognition batch_69cbe6e381d4819084e230389a3ecb77 completed March 31, 2026, 3:23 p.m.
NED1 Entity disambiguation (via context triple) batch_69ce6dabf9908190bb61ad4ddb953902 completed April 2, 2026, 1:22 p.m.
NEDg Description generation batch_69ce6f02fabc819093b95e0d318c5649 completed April 2, 2026, 1:28 p.m.
NED2 Entity disambiguation (via description) batch_69ce6f9b12148190be55b3f5f2b518d9 completed April 2, 2026, 1:31 p.m.
Created at: March 30, 2026, 6:18 p.m.