Triple
T19450272
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Big Four of the Central Pacific |
E486596
|
entity |
| Predicate | associatedWith |
P37
|
FINISHED |
| Object | Union Pacific–Central Pacific railroad connection at Promontory Summit |
—
|
NE NERFINISHED |
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: Union Pacific–Central Pacific railroad connection at Promontory Summit | Statement: [Big Four of the Central Pacific, associatedWith, Union Pacific–Central Pacific railroad connection at Promontory Summit]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Union Pacific–Central Pacific railroad connection at Promontory Summit Context triple: [Big Four of the Central Pacific, associatedWith, Union Pacific–Central Pacific railroad connection at Promontory Summit]
-
A.
Union Pacific–Central Pacific rail connection
chosen
The Union Pacific–Central Pacific rail connection was the historic junction point in Utah where the first U.S. transcontinental railroad was completed in 1869, linking eastern and western rail networks.
-
B.
Promontory Summit rail junction
Promontory Summit rail junction is the historic Utah rail site where the First Transcontinental Railroad was completed in 1869, symbolically linking the eastern and western United States.
-
C.
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.
-
D.
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.
-
E.
First Transcontinental Railroad
The First Transcontinental Railroad was the 19th-century rail line that first connected the eastern and western United States by land, revolutionizing cross-country travel, commerce, and settlement.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (2 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_69d8e8d7ad488190a3373045029b0f3b |
completed | April 10, 2026, 12:11 p.m. |
| NER | Named-entity recognition | batch_69e6338caeb48190aeb1d511996984e3 |
completed | April 20, 2026, 2:09 p.m. |
Created at: April 10, 2026, 1:38 p.m.