Triple
T1003245
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Coast Starlight |
E21649
|
entity |
| Predicate | railLineUsed |
P15040
|
FINISHED |
| Object | Union Pacific Coast Line (segments) |
E2147
|
NE FINISHED |
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: Union Pacific Coast Line (segments) | Statement: [Coast Starlight, railLineUsed, Union Pacific Coast Line (segments)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Union Pacific Coast Line (segments) Context triple: [Coast Starlight, railLineUsed, Union Pacific Coast Line (segments)]
-
A.
Southern Pacific Railroad
Southern Pacific Railroad was a major American railroad company that operated extensive rail networks across the western and southwestern United States from the 19th to the late 20th century.
-
B.
BNSF Railway
BNSF Railway is one of the largest freight railroad networks in North America, operating an extensive system that spans the United States and parts of Canada and Mexico.
-
C.
Texas and Pacific Railway
The Texas and Pacific Railway was a major 19th- and 20th-century American railroad that operated across Texas and into the southwestern United States, playing a key role in regional transportation and economic development.
-
D.
Union Pacific Railroad
chosen
Union Pacific Railroad is one of the largest freight rail networks in the United States, operating an extensive system that spans the western two-thirds of the country.
-
E.
Burlington Northern Santa Fe Railway main line
The Burlington Northern Santa Fe Railway main line is a major transcontinental freight rail corridor in the United States that carries heavy rail traffic across key western routes, including the desert region near Needles, California.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: railLineUsed Context triple: [Coast Starlight, railLineUsed, Union Pacific Coast Line (segments)]
-
A.
railwayLine
Indicates that there is a railway line connection or route associated with or passing through the referenced entity.
-
B.
lineServed
Indicates that a particular transportation line (such as a bus, train, or metro line) provides service to or is operated at a given stop, station, or route segment.
-
C.
subwayLine
Indicates that there is a subway line connection or service relationship between the referenced entities.
-
D.
railwayLineType
Indicates the specific kind or classification of a railway line associated with an entity (e.g., main line, branch line, high-speed line).
-
E.
usesRailInfrastructureOf
chosen
Indicates that one entity operates on, accesses, or otherwise makes use of the rail infrastructure owned or managed by another entity.
- F. None of above.
Provenance (4 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_69a493c53e648190ae8cb76c433fd9a7 |
completed | March 1, 2026, 7:30 p.m. |
| NER | Named-entity recognition | batch_69a4b4fe0a548190aee8abf1890e141e |
completed | March 1, 2026, 9:51 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ac2a1ecddc8190b954d16c6e269498 |
completed | March 7, 2026, 1:37 p.m. |
| PD | Predicate disambiguation | batch_69a4b2b1f4f88190822598cfd2a0fd2b |
completed | March 1, 2026, 9:42 p.m. |
Created at: March 1, 2026, 7:41 p.m.