Triple

T12621092
Position Surface form Disambiguated ID Type / Status
Subject Walnut Creek station E301379 entity
Predicate connectsTo P845 FINISHED
Object Pittsburg/Bay Point–Antioch corridor
The Pittsburg/Bay Point–Antioch corridor is a Bay Area Rapid Transit (BART) line segment in the eastern San Francisco Bay Area that serves communities from Pittsburg/Bay Point through Antioch.
E992856 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: Pittsburg/Bay Point–Antioch corridor | Statement: [Walnut Creek station, connectsTo, Pittsburg/Bay Point–Antioch corridor]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Pittsburg/Bay Point–Antioch corridor
Context triple: [Walnut Creek station, connectsTo, Pittsburg/Bay Point–Antioch corridor]
  • A. Baltimore–Harrisburg corridor
    The Baltimore–Harrisburg corridor is a key Mid-Atlantic transportation and economic region linking Baltimore, Maryland with Harrisburg, Pennsylvania.
  • B. Atlanta–Columbus corridor
    The Atlanta–Columbus corridor is a major transportation and economic route in western Georgia that links the Atlanta metropolitan area with the city of Columbus and the communities in between.
  • C. Piedmont corridor
    The Piedmont corridor is a passenger rail route in North Carolina connecting key cities such as Raleigh, Durham, Greensboro, and Charlotte.
  • D. Carson City–Dayton corridor
    The Carson City–Dayton corridor is a key transportation and development route in western Nevada linking the state capital, Carson City, with the Dayton area and surrounding communities.
  • E. Cleveland–Youngstown corridor
    The Cleveland–Youngstown corridor is a major urban and economic region in northeastern Ohio linking the metropolitan areas of Cleveland and Youngstown.
  • 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: Pittsburg/Bay Point–Antioch corridor
Triple: [Walnut Creek station, connectsTo, Pittsburg/Bay Point–Antioch corridor]
Generated description
The Pittsburg/Bay Point–Antioch corridor is a Bay Area Rapid Transit (BART) line segment in the eastern San Francisco Bay Area that serves communities from Pittsburg/Bay Point through Antioch.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Pittsburg/Bay Point–Antioch corridor
Target entity description: The Pittsburg/Bay Point–Antioch corridor is a Bay Area Rapid Transit (BART) line segment in the eastern San Francisco Bay Area that serves communities from Pittsburg/Bay Point through Antioch.
  • A. Baltimore–Harrisburg corridor
    The Baltimore–Harrisburg corridor is a key Mid-Atlantic transportation and economic region linking Baltimore, Maryland with Harrisburg, Pennsylvania.
  • B. Atlanta–Columbus corridor
    The Atlanta–Columbus corridor is a major transportation and economic route in western Georgia that links the Atlanta metropolitan area with the city of Columbus and the communities in between.
  • C. Piedmont corridor
    The Piedmont corridor is a passenger rail route in North Carolina connecting key cities such as Raleigh, Durham, Greensboro, and Charlotte.
  • D. Carson City–Dayton corridor
    The Carson City–Dayton corridor is a key transportation and development route in western Nevada linking the state capital, Carson City, with the Dayton area and surrounding communities.
  • E. Cleveland–Youngstown corridor
    The Cleveland–Youngstown corridor is a major urban and economic region in northeastern Ohio linking the metropolitan areas of Cleveland and Youngstown.
  • 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_69d7bdeaf49c8190b13800111fa77ea3 completed April 9, 2026, 2:55 p.m.
NER Named-entity recognition batch_69d960c8671881909a102d28b0e7f603 completed April 10, 2026, 8:42 p.m.
NED1 Entity disambiguation (via context triple) batch_69f65ed6f79881908872c644a9789f04 completed May 2, 2026, 8:30 p.m.
NEDg Description generation batch_69f660294004819089714099a08085f6 completed May 2, 2026, 8:35 p.m.
NED2 Entity disambiguation (via description) batch_69f6613ce1108190851cf8491fe666c8 completed May 2, 2026, 8:40 p.m.
Created at: April 9, 2026, 5:13 p.m.