Triple
T19531520
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Union Pacific Moffat Subdivision |
E488666
|
entity |
| Predicate | historicalPredecessor |
P97
|
FINISHED |
| Object | Denver and Salt Lake Railway main line |
—
|
NE NERFINISHED |
How this triple was built (3 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: Denver and Salt Lake Railway main line | Statement: [Union Pacific Moffat Subdivision, historicalPredecessor, Denver and Salt Lake Railway main line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Denver and Salt Lake Railway main line Context triple: [Union Pacific Moffat Subdivision, historicalPredecessor, Denver and Salt Lake Railway main line]
-
A.
San Pedro, Los Angeles and Salt Lake Railroad
The San Pedro, Los Angeles and Salt Lake Railroad was an early 20th-century rail line that connected Los Angeles, California, with Salt Lake City, Utah, playing a key role in the development of the American Southwest.
-
B.
St. Joseph and Denver City Railroad
The St. Joseph and Denver City Railroad was a 19th-century rail line that formed part of an important east–west route across the Great Plains, helping connect Midwestern communities to broader national rail networks.
-
C.
Denver, South Park and Pacific Railroad
The Denver, South Park and Pacific Railroad was a historic 19th-century narrow-gauge railroad that served Colorado’s mining regions and mountain communities.
-
D.
Carson and Colorado Railway
The Carson and Colorado Railway was a narrow-gauge railroad that operated in the late 19th and early 20th centuries, primarily serving remote mining regions in Nevada and eastern California.
-
E.
Union Pacific Moffat Subdivision
The Union Pacific Moffat Subdivision is a major railroad line in Colorado that carries freight and passenger trains through the Rocky Mountains via the historic Moffat Tunnel and surrounding mountain passes.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Denver and Salt Lake Railway main line Target entity description: The Denver and Salt Lake Railway main line was an early 20th-century standard-gauge railroad route that crossed Colorado’s Rocky Mountains, helping open up the state’s central and western regions to rail transportation.
-
A.
San Pedro, Los Angeles and Salt Lake Railroad
The San Pedro, Los Angeles and Salt Lake Railroad was an early 20th-century rail line that connected Los Angeles, California, with Salt Lake City, Utah, playing a key role in the development of the American Southwest.
-
B.
St. Joseph and Denver City Railroad
The St. Joseph and Denver City Railroad was a 19th-century rail line that formed part of an important east–west route across the Great Plains, helping connect Midwestern communities to broader national rail networks.
-
C.
Denver, South Park and Pacific Railroad
The Denver, South Park and Pacific Railroad was a historic 19th-century narrow-gauge railroad that served Colorado’s mining regions and mountain communities.
-
D.
Carson and Colorado Railway
The Carson and Colorado Railway was a narrow-gauge railroad that operated in the late 19th and early 20th centuries, primarily serving remote mining regions in Nevada and eastern California.
-
E.
Union Pacific Moffat Subdivision
chosen
The Union Pacific Moffat Subdivision is a major railroad line in Colorado that carries freight and passenger trains through the Rocky Mountains via the historic Moffat Tunnel and surrounding mountain passes.
- F. None of above.
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_69d8e8db5b6c8190984b61f91981f575 |
completed | April 10, 2026, 12:11 p.m. |
| NER | Named-entity recognition | batch_69e6363fd1f8819080805346efad2579 |
completed | April 20, 2026, 2:20 p.m. |
Created at: April 10, 2026, 1:41 p.m.