Triple

T2208141
Position Surface form Disambiguated ID Type / Status
Subject CTA buses E50849 entity
Predicate informationService P5881 FINISHED
Object Bus Tracker real-time information system
Bus Tracker real-time information system is the Chicago Transit Authority’s online and mobile platform that provides riders with live tracking and predicted arrival times for CTA buses.
E244494 NE FINISHED

How this triple was built (5 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: Bus Tracker real-time information system | Statement: [CTA buses, informationService, Bus Tracker real-time information system]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Bus Tracker real-time information system
Context triple: [CTA buses, informationService, Bus Tracker real-time information system]
  • A. TheBus routes
    TheBus routes are Honolulu’s primary public bus lines that provide extensive transit service throughout Oʻahu, including to and from the Mānoa area.
  • B. MetroAccess
    MetroAccess is a paratransit service providing door-to-door transportation for people with disabilities in the Washington, D.C. metropolitan area.
  • C. Transitway
    Transitway is a bus rapid transit network in Ottawa, Ontario, providing high-capacity, grade-separated transit service across the city.
  • D. GoRaleigh bus system
    The GoRaleigh bus system is the primary public transit network serving Raleigh, North Carolina and surrounding areas with fixed-route and paratransit bus services.
  • E. Greenway Public Transportation
    Greenway Public Transportation is a regional public transit agency providing bus and demand-response services in and around Newton, North Carolina.
  • 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: Bus Tracker real-time information system
Triple: [CTA buses, informationService, Bus Tracker real-time information system]
Generated description
Bus Tracker real-time information system is the Chicago Transit Authority’s online and mobile platform that provides riders with live tracking and predicted arrival times for CTA buses.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Bus Tracker real-time information system
Target entity description: Bus Tracker real-time information system is the Chicago Transit Authority’s online and mobile platform that provides riders with live tracking and predicted arrival times for CTA buses.
  • A. TheBus routes
    TheBus routes are Honolulu’s primary public bus lines that provide extensive transit service throughout Oʻahu, including to and from the Mānoa area.
  • B. MetroAccess
    MetroAccess is a paratransit service providing door-to-door transportation for people with disabilities in the Washington, D.C. metropolitan area.
  • C. Transitway
    Transitway is a bus rapid transit network in Ottawa, Ontario, providing high-capacity, grade-separated transit service across the city.
  • D. GoRaleigh bus system
    The GoRaleigh bus system is the primary public transit network serving Raleigh, North Carolina and surrounding areas with fixed-route and paratransit bus services.
  • E. Greenway Public Transportation
    Greenway Public Transportation is a regional public transit agency providing bus and demand-response services in and around Newton, North Carolina.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: informationService
Context triple: [CTA buses, informationService, Bus Tracker real-time information system]
  • A. providesInformationIn
    Indicates that one entity supplies or conveys information within or through another entity or context.
  • B. hasInformationService chosen
    Indicates that one entity provides, operates, or is associated with an information-related service for another entity.
  • C. intelligenceSource
    Indicates that one entity serves as the origin or provider of intelligence information for another entity.
  • D. requiredInformation
    Indicates that certain data or details are necessary and must be provided for a process, action, or relationship to proceed or be valid.
  • E. usesInformationSources
    Indicates that an entity relies on or consults specified information sources to perform actions, make decisions, or obtain knowledge.
  • F. None of above.

Provenance (6 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_69a88b06709c8190978fb2418470d1b6 completed March 4, 2026, 7:41 p.m.
NER Named-entity recognition batch_69abc1baa0948190b07ffc347a4f714e completed March 7, 2026, 6:12 a.m.
NED1 Entity disambiguation (via context triple) batch_69ae654e22b48190bb40f7c61bb359b1 completed March 9, 2026, 6:14 a.m.
NEDg Description generation batch_69ae6608d3ac8190923cd6a6ce7c4c89 completed March 9, 2026, 6:17 a.m.
NED2 Entity disambiguation (via description) batch_69ae66a751f881908fda164de72dac9b completed March 9, 2026, 6:20 a.m.
PD Predicate disambiguation batch_69abbda8a6dc8190aa855ce2d17194b1 completed March 7, 2026, 5:54 a.m.
Created at: March 4, 2026, 7:46 p.m.