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.