Triple

T8255227
Position Surface form Disambiguated ID Type / Status
Subject Summit Tunnel in the Sierra Nevada E193054 entity
Predicate partOf P40 FINISHED
Object Central Pacific Railroad line E721090 NE FINISHED

How this triple was built (2 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: Central Pacific Railroad line | Statement: [Summit Tunnel in the Sierra Nevada, partOf, Central Pacific Railroad line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Central Pacific Railroad line
Context triple: [Summit Tunnel in the Sierra Nevada, partOf, Central Pacific Railroad line]
  • A. Central Pacific Railroad
    The Central Pacific Railroad was a major 19th-century American railroad company that built the western portion of the First Transcontinental Railroad, linking California to the eastern United States and transforming transportation and commerce.
  • B. Pacific Railroad
    Pacific Railroad was an early American railway company that became the predecessor of the Missouri Pacific Railroad (MoPac), helping to pioneer rail transportation in the central United States.
  • C. Central Pacific line from Sacramento, California chosen
    The Central Pacific line from Sacramento, California was the western segment of the first U.S. transcontinental railroad, built eastward over the Sierra Nevada to meet the Union Pacific line at Promontory Summit in 1869.
  • D. Central Pacific Railroad historic route
    The Central Pacific Railroad historic route is the original transcontinental rail line built in the 1860s that crossed the Sierra Nevada, including through Donner Pass, to connect California with the rest of the United States.
  • E. Oregon and California Railroad
    The Oregon and California Railroad was a 19th-century rail line in the Pacific Northwest that played a key role in connecting Oregon communities and facilitating regional development.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 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_69ca82dfad9c8190b8cd18fb89f50f40 completed March 30, 2026, 2:04 p.m.
NER Named-entity recognition batch_69cb78f9f680819088f1d56e0f98974f completed March 31, 2026, 7:34 a.m.
NED1 Entity disambiguation (via context triple) batch_69cd94f9c97881908c6e9f266aba888e completed April 1, 2026, 9:58 p.m.
Created at: March 30, 2026, 5:48 p.m.