Triple

T4177046
Position Surface form Disambiguated ID Type / Status
Subject Houston METRORail E86502 entity
Predicate operator P179 FINISHED
Object Metropolitan Transit Authority of Harris County
The Metropolitan Transit Authority of Harris County is the public transportation agency serving the Houston, Texas metropolitan area, providing bus, light rail, and paratransit services.
 E418779 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: Metropolitan Transit Authority of Harris County | Statement: [Houston METRORail, operator, Metropolitan Transit Authority of Harris County]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Metropolitan Transit Authority of Harris County
Context triple: [Houston METRORail, operator, Metropolitan Transit Authority of Harris County]
  • A. San Antonio Metropolitan Transit Authority
    San Antonio Metropolitan Transit Authority is the public transportation agency serving the San Antonio, Texas metropolitan area.
  • B. Dallas Area Rapid Transit
    Dallas Area Rapid Transit is the public transportation authority serving the Dallas–Fort Worth metropolitan area with bus, light rail, commuter rail, and paratransit services.
  • C. Metro Rail Transit Corporation
    Metro Rail Transit Corporation is a private consortium in the Philippines that financed, built, and initially operated Manila’s MRT Line 3 under a public–private partnership.
  • D. Denton County Transportation Authority
    Denton County Transportation Authority is a regional public transit agency in North Texas that operates bus and rail services primarily within Denton County and connects to the broader Dallas–Fort Worth transportation network.
  • E. New Orleans Regional Transit Authority
    The New Orleans Regional Transit Authority is the public agency responsible for operating and managing the city’s transit services, including buses, streetcars, and related passenger facilities in New Orleans.
  • 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: Metropolitan Transit Authority of Harris County
Triple: [Houston METRORail, operator, Metropolitan Transit Authority of Harris County]
Generated description
The Metropolitan Transit Authority of Harris County is the public transportation agency serving the Houston, Texas metropolitan area, providing bus, light rail, and paratransit services.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Metropolitan Transit Authority of Harris County
Target entity description: The Metropolitan Transit Authority of Harris County is the public transportation agency serving the Houston, Texas metropolitan area, providing bus, light rail, and paratransit services.
  • A. San Antonio Metropolitan Transit Authority
    San Antonio Metropolitan Transit Authority is the public transportation agency serving the San Antonio, Texas metropolitan area.
  • B. Dallas Area Rapid Transit
    Dallas Area Rapid Transit is the public transportation authority serving the Dallas–Fort Worth metropolitan area with bus, light rail, commuter rail, and paratransit services.
  • C. Metro Rail Transit Corporation
    Metro Rail Transit Corporation is a private consortium in the Philippines that financed, built, and initially operated Manila’s MRT Line 3 under a public–private partnership.
  • D. Denton County Transportation Authority
    Denton County Transportation Authority is a regional public transit agency in North Texas that operates bus and rail services primarily within Denton County and connects to the broader Dallas–Fort Worth transportation network.
  • E. New Orleans Regional Transit Authority
    The New Orleans Regional Transit Authority is the public agency responsible for operating and managing the city’s transit services, including buses, streetcars, and related passenger facilities in New Orleans.
  • 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_69aed93de98c8190ad838ce507b77c8a completed March 9, 2026, 2:29 p.m.
NER Named-entity recognition batch_69af02ec20fc8190b6f30576337e0ddc completed March 9, 2026, 5:27 p.m.
NED1 Entity disambiguation (via context triple) batch_69b57f564c9c8190bfc321c8ec2dac14 completed March 14, 2026, 3:31 p.m.
NEDg Description generation batch_69b58330b1d48190a3af96d3c0e7aa1b completed March 14, 2026, 3:48 p.m.
NED2 Entity disambiguation (via description) batch_69b583ba1fd8819092b7fe73a17dc406 completed March 14, 2026, 3:50 p.m.
Created at: March 9, 2026, 3:45 p.m.