Triple

T19854106
Position Surface form Disambiguated ID Type / Status
Subject Chicago Transit Authority Brown Line stations E477084 entity
Predicate underwentProject P6390 FINISHED
Object Brown Line Capacity Expansion Project E892750 NE FINISHED

How this triple was built (2 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: Brown Line Capacity Expansion Project | Statement: [Chicago Transit Authority Brown Line stations, underwentProject, Brown Line Capacity Expansion Project]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Brown Line Capacity Expansion Project
Context triple: [Chicago Transit Authority Brown Line stations, underwentProject, Brown Line Capacity Expansion Project]
  • A. Brown Line Capacity Expansion Project chosen
    The Brown Line Capacity Expansion Project was a major Chicago Transit Authority initiative to modernize and increase the capacity of the Brown Line, including station upgrades, platform extensions, and infrastructure improvements to accommodate longer trains and more riders.
  • B. North Line extension of Red Line
    The North Line extension of the Red Line is a METRORail light rail expansion in Houston that extends service north from downtown to additional neighborhoods and transit connections.
  • C. Red Line Northwest Extension corridor
    The Red Line Northwest Extension corridor is a planned expansion route of Boston's MBTA Red Line intended to extend rapid transit service northwest from its current terminus.
  • D. Green Line Extension
    The Green Line Extension is a Massachusetts Bay Transportation Authority light rail project that extends Boston’s Green Line service into previously unserved neighborhoods in Somerville and Medford.
  • E. Red Line Valley extension
    Red Line Valley extension is the segment of Los Angeles Metro’s Red Line subway that was built to extend service into the San Fernando Valley, terminating in North Hollywood.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 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_69d8e51d39d081909bcfafeaaf3d2fcc completed April 10, 2026, 11:55 a.m.
NER Named-entity recognition batch_69e6586aa1dc8190b6cfe051a57e338b completed April 20, 2026, 4:46 p.m.
NED1 Entity disambiguation (via context triple) batch_6a07d44364e8819082c2f9ac214106c9 completed May 16, 2026, 2:19 a.m.
Created at: April 10, 2026, 1:51 p.m.