Triple
T1003251
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Coast Starlight |
E21649
|
entity |
| Predicate | predecessorService |
P22193
|
FINISHED |
| Object |
Starlight (Southern Pacific train)
Starlight (Southern Pacific train) was a streamlined passenger train operated by the Southern Pacific Railroad along the U.S. West Coast, serving as an important long-distance service before being succeeded by Amtrak’s Coast Starlight.
|
E21649
|
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: Starlight (Southern Pacific train) | Statement: [Coast Starlight, predecessorService, Starlight (Southern Pacific train)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Starlight (Southern Pacific train) Context triple: [Coast Starlight, predecessorService, Starlight (Southern Pacific train)]
-
A.
Silver Star (train)
The Silver Star is an Amtrak long-distance passenger train that operates between New York City and Miami, serving major cities along the U.S. East Coast.
-
B.
Crescent (train)
The Crescent is a long-distance Amtrak passenger train that runs daily between New York City and New Orleans, serving major cities along the U.S. East Coast and Deep South.
-
C.
California Zephyr
The California Zephyr is a long-distance passenger train route in the United States that runs through the Rocky Mountains and Sierra Nevada, often regarded as one of the most scenic rail journeys in North America.
-
D.
Auto Train
Auto Train is a long-distance Amtrak service that carries both passengers and their vehicles nonstop between the Washington, D.C. area and central Florida.
-
E.
Coast Starlight
Coast Starlight is a long-distance Amtrak passenger train renowned for its scenic route along the U.S. West Coast between Los Angeles and Seattle.
- 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: Starlight (Southern Pacific train) Triple: [Coast Starlight, predecessorService, Starlight (Southern Pacific train)]
Generated description
Starlight (Southern Pacific train) was a streamlined passenger train operated by the Southern Pacific Railroad along the U.S. West Coast, serving as an important long-distance service before being succeeded by Amtrak’s Coast Starlight.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Starlight (Southern Pacific train) Target entity description: Starlight (Southern Pacific train) was a streamlined passenger train operated by the Southern Pacific Railroad along the U.S. West Coast, serving as an important long-distance service before being succeeded by Amtrak’s Coast Starlight.
-
A.
Silver Star (train)
The Silver Star is an Amtrak long-distance passenger train that operates between New York City and Miami, serving major cities along the U.S. East Coast.
-
B.
Crescent (train)
The Crescent is a long-distance Amtrak passenger train that runs daily between New York City and New Orleans, serving major cities along the U.S. East Coast and Deep South.
-
C.
California Zephyr
The California Zephyr is a long-distance passenger train route in the United States that runs through the Rocky Mountains and Sierra Nevada, often regarded as one of the most scenic rail journeys in North America.
-
D.
Auto Train
Auto Train is a long-distance Amtrak service that carries both passengers and their vehicles nonstop between the Washington, D.C. area and central Florida.
-
E.
Coast Starlight
chosen
Coast Starlight is a long-distance Amtrak passenger train renowned for its scenic route along the U.S. West Coast between Los Angeles and Seattle.
- F. None of above.
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_69a493c53e648190ae8cb76c433fd9a7 |
completed | March 1, 2026, 7:30 p.m. |
| NER | Named-entity recognition | batch_69a4b7570b388190ada9693935792a58 |
completed | March 1, 2026, 10:01 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ac2a1ecddc8190b954d16c6e269498 |
completed | March 7, 2026, 1:37 p.m. |
| NEDg | Description generation | batch_69ac2a8dd818819088e6140e9a12594b |
completed | March 7, 2026, 1:39 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69ac2af2efd88190b1da673aa3ead5fd |
completed | March 7, 2026, 1:41 p.m. |
Created at: March 1, 2026, 7:41 p.m.