Triple

T16194755
Position Surface form Disambiguated ID Type / Status
Subject Union City station E393032 entity
Predicate connectsRegion P845 FINISHED
Object San Francisco Peninsula (via Transbay Tube connections)
The San Francisco Peninsula is the stretch of land in Northern California between San Francisco Bay and the Pacific Ocean that includes the city of San Francisco and numerous suburban communities to its south.
E1007336 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: San Francisco Peninsula (via Transbay Tube connections) | Statement: [Union City station, connectsRegion, San Francisco Peninsula (via Transbay Tube connections)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: San Francisco Peninsula (via Transbay Tube connections)
Context triple: [Union City station, connectsRegion, San Francisco Peninsula (via Transbay Tube connections)]
  • A. San Francisco (Caltrain)
    San Francisco (Caltrain) is the northern terminus and major commuter rail station of the Caltrain line serving the San Francisco Bay Area.
  • B. San Francisco (via ferry and bus connections)
    San Francisco (via ferry and bus connections) refers to the historical western endpoint of the California Zephyr route, where passengers transferred from trains to ferries and buses to reach the city of San Francisco.
  • C. San Francisco coastal transportation corridor
    The San Francisco coastal transportation corridor is a scenic route along the city’s Pacific shoreline that links beaches, parks, and neighborhoods via roads, trails, and transit infrastructure.
  • D. Transbay BART network
    The Transbay BART network is the portion of the Bay Area Rapid Transit system that carries trains through the Transbay Tube between San Francisco and the East Bay, forming a critical regional rail link under San Francisco Bay.
  • E. South Bay–East Bay commute corridor
    The South Bay–East Bay commute corridor is a major regional travel route in the San Francisco Bay Area connecting residential and employment centers between the South Bay and East Bay.
  • 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: San Francisco Peninsula (via Transbay Tube connections)
Triple: [Union City station, connectsRegion, San Francisco Peninsula (via Transbay Tube connections)]
Generated description
The San Francisco Peninsula is the stretch of land in Northern California between San Francisco Bay and the Pacific Ocean that includes the city of San Francisco and numerous suburban communities to its south.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: San Francisco Peninsula (via Transbay Tube connections)
Target entity description: The San Francisco Peninsula is the stretch of land in Northern California between San Francisco Bay and the Pacific Ocean that includes the city of San Francisco and numerous suburban communities to its south.
  • A. San Francisco (Caltrain)
    San Francisco (Caltrain) is the northern terminus and major commuter rail station of the Caltrain line serving the San Francisco Bay Area.
  • B. San Francisco (via ferry and bus connections)
    San Francisco (via ferry and bus connections) refers to the historical western endpoint of the California Zephyr route, where passengers transferred from trains to ferries and buses to reach the city of San Francisco.
  • C. San Francisco coastal transportation corridor
    The San Francisco coastal transportation corridor is a scenic route along the city’s Pacific shoreline that links beaches, parks, and neighborhoods via roads, trails, and transit infrastructure.
  • D. Transbay BART network chosen
    The Transbay BART network is the portion of the Bay Area Rapid Transit system that carries trains through the Transbay Tube between San Francisco and the East Bay, forming a critical regional rail link under San Francisco Bay.
  • E. South Bay–East Bay commute corridor
    The South Bay–East Bay commute corridor is a major regional travel route in the San Francisco Bay Area connecting residential and employment centers between the South Bay and East Bay.
  • F. None of above.

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_69d87f1e49ac8190a311b54d32990576 completed April 10, 2026, 4:39 a.m.
NER Named-entity recognition batch_69e222d851188190b2452d165e4fc4bd completed April 17, 2026, 12:08 p.m.
NED1 Entity disambiguation (via context triple) batch_69ffff0bfd08819083afc4bea1b99aad completed May 10, 2026, 3:44 a.m.
NEDg Description generation batch_6a0001b815c481908ed6fcaea42ee9fc completed May 10, 2026, 3:55 a.m.
NED2 Entity disambiguation (via description) batch_6a0002106a5c8190b92d27f01178a321 completed May 10, 2026, 3:57 a.m.
Created at: April 10, 2026, 5:02 a.m.