Triple

T76620
Position Surface form Disambiguated ID Type / Status
Subject Caltrain E1530 entity
Predicate formerName P65 FINISHED
Object Peninsula Commute
Peninsula Commute was the historic commuter rail service on the San Francisco Peninsula that later became known as Caltrain.
E7289 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: Peninsula Commute | Statement: [Caltrain, formerName, Peninsula Commute]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Peninsula Commute
Context triple: [Caltrain, formerName, Peninsula Commute]
  • A. North Shore
    North Shore is a coastal region in northeastern Massachusetts known for its historic seaside towns, beaches, and proximity to Boston.
  • B. Riverway
    Riverway is a linear park and waterway in Boston that forms part of the Emerald Necklace, offering scenic green space and recreational paths near the Longwood Medical Area.
  • C. Northeast Corridor
    The Northeast Corridor is the busiest passenger rail line in the United States, running primarily Amtrak and commuter trains along the urbanized spine of the East Coast between major cities such as Washington, D.C., Philadelphia, New York City, and Boston.
  • D. Seven Corners
    Seven Corners is a densely developed commercial and residential area in Fairfax County, Northern Virginia, known for its major road junction and large shopping centers.
  • E. Queen City of the Trails
    Queen City of the Trails is a nickname for Independence, Missouri, reflecting its historic role as a major starting point for westward pioneer trails such as the Oregon, Santa Fe, and California Trails.
  • 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: Peninsula Commute
Triple: [Caltrain, formerName, Peninsula Commute]
Generated description
Peninsula Commute was the historic commuter rail service on the San Francisco Peninsula that later became known as Caltrain.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Peninsula Commute
Target entity description: Peninsula Commute was the historic commuter rail service on the San Francisco Peninsula that later became known as Caltrain.
  • A. North Shore
    North Shore is a coastal region in northeastern Massachusetts known for its historic seaside towns, beaches, and proximity to Boston.
  • B. Riverway
    Riverway is a linear park and waterway in Boston that forms part of the Emerald Necklace, offering scenic green space and recreational paths near the Longwood Medical Area.
  • C. Muni
    Muni is San Francisco’s primary public transit agency, operating buses, light rail, historic streetcars, and the city’s iconic cable cars.
  • D. Northeast Corridor
    The Northeast Corridor is the busiest passenger rail line in the United States, running primarily Amtrak and commuter trains along the urbanized spine of the East Coast between major cities such as Washington, D.C., Philadelphia, New York City, and Boston.
  • E. Seven Corners
    Seven Corners is a densely developed commercial and residential area in Fairfax County, Northern Virginia, known for its major road junction and large shopping centers.
  • 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_69a24c60d19c8190a1b6c105ca59ef5b completed Feb. 28, 2026, 2:01 a.m.
NER Named-entity recognition batch_69a24f1d20b88190b66836cc018e52e1 completed Feb. 28, 2026, 2:12 a.m.
NED1 Entity disambiguation (via context triple) batch_69a25abc7b648190b8a83a05f4c76af0 completed Feb. 28, 2026, 3:02 a.m.
NEDg Description generation batch_69a25caa409881909eb7dfe7d038cc39 completed Feb. 28, 2026, 3:10 a.m.
NED2 Entity disambiguation (via description) batch_69a25e287cc88190b2eb5ae02bd2f9d1 completed Feb. 28, 2026, 3:16 a.m.
Created at: Feb. 28, 2026, 2:06 a.m.