Triple

T7413762
Position Surface form Disambiguated ID Type / Status
Subject Purple Line Express E171075 entity
Predicate rollingStock P1305 FINISHED
Object CTA 5000-series railcars E94934 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: CTA 5000-series railcars | Statement: [Purple Line Express, rollingStock, CTA 5000-series railcars]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: CTA 5000-series railcars
Context triple: [Purple Line Express, rollingStock, CTA 5000-series railcars]
  • A. CTA 5000-series railcars chosen
    The CTA 5000-series railcars are a modern generation of Chicago "L" rapid transit cars featuring improved accessibility, digital signage, and enhanced passenger comfort and safety systems.
  • B. CTA 7000-series railcars
    The CTA 7000-series railcars are a modern generation of Chicago Transit Authority rapid transit vehicles designed to replace older fleets with improved performance, accessibility, and passenger amenities.
  • C. CTA 2400-series railcars
    The CTA 2400-series railcars were an earlier generation of Chicago Transit Authority rapid transit cars that served as a key workhorse of the “L” system before being succeeded by later series.
  • D. CTA 3200-series railcars
    The CTA 3200-series railcars are a fleet of Chicago "L" rapid transit cars introduced in the early 1990s, known for serving lines such as the Orange Line with modernized features compared to earlier series.
  • E. CTA 2600-series railcars
    The CTA 2600-series railcars are a fleet of Chicago 'L' rapid transit cars introduced in the 1980s, known for their stainless-steel bodies and long service on multiple lines in the system.
  • 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_69c68a618bdc81908d8018edadecd1a4 completed March 27, 2026, 1:47 p.m.
NER Named-entity recognition batch_69c6f2c336308190932c14cec5eec25f completed March 27, 2026, 9:12 p.m.
NED1 Entity disambiguation (via context triple) batch_69c81ee1b48c81909912ff0d7bf2837e completed March 28, 2026, 6:33 p.m.
Created at: March 27, 2026, 3:11 p.m.