Triple
T5219759
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Union Pacific Valley Subdivision (segments) |
E117840
|
entity |
| Predicate | successorLineOf |
P10969
|
FINISHED |
| Object |
Southern Pacific main line in California’s Central Valley
The Southern Pacific main line in California’s Central Valley was a major north–south railroad corridor that formed the backbone of freight and passenger rail service through the state’s agricultural heartland.
|
E504058
|
NE FINISHED |
How this triple was built (5 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: Southern Pacific main line in California’s Central Valley | Statement: [Union Pacific Valley Subdivision (segments), successorLineOf, Southern Pacific main line in California’s Central Valley]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Southern Pacific main line in California’s Central Valley Context triple: [Union Pacific Valley Subdivision (segments), successorLineOf, Southern Pacific main line in California’s Central Valley]
-
A.
Union Pacific Railroad main line through the Mojave Desert
The Union Pacific Railroad main line through the Mojave Desert is a major transcontinental freight corridor crossing the arid Mojave region of California, historically serving depots like Kelso as key operational and service points.
-
B.
Union Pacific Railroad Fresno Subdivision
The Union Pacific Railroad Fresno Subdivision is a key freight and passenger rail corridor in California’s Central Valley that carries both Union Pacific trains and Altamont Corridor Express commuter services.
-
C.
Union Pacific West Line
The Union Pacific West Line is a commuter rail route in the Chicago metropolitan area that runs between downtown Chicago and western suburbs, providing daily passenger service as part of the Metra system.
-
D.
California Western Railroad
California Western Railroad is a historic short-line railway in Northern California, best known for its scenic "Skunk Train" excursions through the redwood forests between Willits and Fort Bragg.
-
E.
Union Pacific Railroad Coast Subdivision
The Union Pacific Railroad Coast Subdivision is a key rail corridor in California that carries both freight and commuter services, including trains operated by the Altamont Corridor Express.
- 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: Southern Pacific main line in California’s Central Valley Triple: [Union Pacific Valley Subdivision (segments), successorLineOf, Southern Pacific main line in California’s Central Valley]
Generated description
The Southern Pacific main line in California’s Central Valley was a major north–south railroad corridor that formed the backbone of freight and passenger rail service through the state’s agricultural heartland.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Southern Pacific main line in California’s Central Valley Target entity description: The Southern Pacific main line in California’s Central Valley was a major north–south railroad corridor that formed the backbone of freight and passenger rail service through the state’s agricultural heartland.
-
A.
Union Pacific Railroad main line through the Mojave Desert
The Union Pacific Railroad main line through the Mojave Desert is a major transcontinental freight corridor crossing the arid Mojave region of California, historically serving depots like Kelso as key operational and service points.
-
B.
Union Pacific Railroad Fresno Subdivision
The Union Pacific Railroad Fresno Subdivision is a key freight and passenger rail corridor in California’s Central Valley that carries both Union Pacific trains and Altamont Corridor Express commuter services.
-
C.
Union Pacific West Line
The Union Pacific West Line is a commuter rail route in the Chicago metropolitan area that runs between downtown Chicago and western suburbs, providing daily passenger service as part of the Metra system.
-
D.
California Western Railroad
California Western Railroad is a historic short-line railway in Northern California, best known for its scenic "Skunk Train" excursions through the redwood forests between Willits and Fort Bragg.
-
E.
Union Pacific Railroad Coast Subdivision
The Union Pacific Railroad Coast Subdivision is a key rail corridor in California that carries both freight and commuter services, including trains operated by the Altamont Corridor Express.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: successorLineOf Context triple: [Union Pacific Valley Subdivision (segments), successorLineOf, Southern Pacific main line in California’s Central Valley]
-
A.
successorLine
chosen
Indicates that one line directly follows another in a sequence or ordered arrangement.
-
B.
successorInLineage
Indicates that one entity is the next direct descendant or inheritor in a genealogical or hierarchical lineage from another entity.
-
C.
successorDesignationFor
Indicates the designation or identification of an entity that is intended to succeed or replace another entity in a given role, position, or function.
-
D.
successorDynasty
Indicates that one dynasty directly follows and replaces another in a sequence of rule or authority.
-
E.
successor
Indicates that one entity directly follows another in an ordered sequence or position.
- F. None of above.
Provenance (6 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_69bd4465e03081909bfcfd7113062590 |
completed | March 20, 2026, 12:58 p.m. |
| NER | Named-entity recognition | batch_69bd7ab6e63c8190964b2b65a0206134 |
completed | March 20, 2026, 4:49 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69beeff0b15081908741aadfd351811c |
completed | March 21, 2026, 7:22 p.m. |
| NEDg | Description generation | batch_69bef309c230819094ed6ae3fefe6e5b |
completed | March 21, 2026, 7:35 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69bef36c88f4819082931dbe1bb13f89 |
completed | March 21, 2026, 7:37 p.m. |
| PD | Predicate disambiguation | batch_69bd77bd2a448190a9ae5afd2585a7b9 |
completed | March 20, 2026, 4:37 p.m. |
Created at: March 20, 2026, 1:48 p.m.