Triple
T18242808
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Martinez Amtrak station |
E436861
|
entity |
| Predicate | railLine |
P848
|
FINISHED |
| Object |
UP Martinez Subdivision
The UP Martinez Subdivision is a Union Pacific Railroad main line in Northern California that carries significant passenger and freight traffic, including Amtrak services through Martinez.
|
E1314047
|
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: UP Martinez Subdivision | Statement: [Martinez Amtrak station, railLine, UP Martinez Subdivision]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: UP Martinez Subdivision Context triple: [Martinez Amtrak station, railLine, UP Martinez Subdivision]
-
A.
Hudson Subdivision
The Hudson Subdivision is a key railroad line in New York State that carries passenger and freight trains along the Hudson River corridor, including service through Albany–Rensselaer station.
-
B.
Weston Subdivision
Weston Subdivision is a key railway corridor in the Greater Toronto Area used by GO Transit and other operators for commuter and freight rail services.
-
C.
Carman Subdivision
Carman Subdivision is a railway line in New York State that serves as a key freight route and connector within the regional rail network.
-
D.
Roxbury Subdivision
Roxbury Subdivision is a rail line operated by the New England Central Railroad, forming part of its regional freight rail network in New England.
-
E.
San Luis Obispo Subdivision
The San Luis Obispo Subdivision is a railroad line segment in California that forms part of the Union Pacific (formerly Southern Pacific) Coast Line, serving the San Luis Obispo area and surrounding region.
- 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: UP Martinez Subdivision Triple: [Martinez Amtrak station, railLine, UP Martinez Subdivision]
Generated description
The UP Martinez Subdivision is a Union Pacific Railroad main line in Northern California that carries significant passenger and freight traffic, including Amtrak services through Martinez.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: UP Martinez Subdivision Target entity description: The UP Martinez Subdivision is a Union Pacific Railroad main line in Northern California that carries significant passenger and freight traffic, including Amtrak services through Martinez.
-
A.
Hudson Subdivision
The Hudson Subdivision is a key railroad line in New York State that carries passenger and freight trains along the Hudson River corridor, including service through Albany–Rensselaer station.
-
B.
Weston Subdivision
Weston Subdivision is a key railway corridor in the Greater Toronto Area used by GO Transit and other operators for commuter and freight rail services.
-
C.
Carman Subdivision
Carman Subdivision is a railway line in New York State that serves as a key freight route and connector within the regional rail network.
-
D.
Roxbury Subdivision
Roxbury Subdivision is a rail line operated by the New England Central Railroad, forming part of its regional freight rail network in New England.
-
E.
San Luis Obispo Subdivision
The San Luis Obispo Subdivision is a railroad line segment in California that forms part of the Union Pacific (formerly Southern Pacific) Coast Line, serving the San Luis Obispo area and surrounding region.
- F. None of above. chosen
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_69d8b91104e08190a8241f7d260a5162 |
completed | April 10, 2026, 8:47 a.m. |
| NER | Named-entity recognition | batch_69e4f7e4f0548190bc617e6acd17010d |
completed | April 19, 2026, 3:42 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a03ac7124f88190bfc0064e00946586 |
completed | May 12, 2026, 10:40 p.m. |
| NEDg | Description generation | batch_6a03ad3be75c819080f57a24747ec55f |
completed | May 12, 2026, 10:44 p.m. |
| NED2 | Entity disambiguation (via description) | batch_6a03aede6ea481908bb9acdb2ff17e9a |
completed | May 12, 2026, 10:51 p.m. |
Created at: April 10, 2026, 10:33 a.m.