Triple
T7510719
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Kennecott Mines National Historic Landmark |
E177510
|
entity |
| Predicate | transportLinkedBy |
P37664
|
FINISHED |
| Object |
Copper River and Northwestern Railway
The Copper River and Northwestern Railway was an early 20th-century Alaskan railroad built primarily to haul copper ore from the remote Kennecott mines to the coastal port of Cordova.
|
E669927
|
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: Copper River and Northwestern Railway | Statement: [Kennecott Mines National Historic Landmark, transportLinkedBy, Copper River and Northwestern Railway]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Copper River and Northwestern Railway Context triple: [Kennecott Mines National Historic Landmark, transportLinkedBy, Copper River and Northwestern Railway]
-
A.
Alaska Northern Railway
The Alaska Northern Railway was an early 20th-century rail line in Alaska that laid much of the groundwork for what later became the Alaska Railroad.
-
B.
Alaska Railroad
The Alaska Railroad is a state-owned railway system in Alaska that provides passenger and freight services across key regions including Anchorage, Fairbanks, and coastal ports.
-
C.
Northern Pacific Railway
The Northern Pacific Railway was a major transcontinental railroad in the northern United States that played a key role in opening and developing the Pacific Northwest in the late 19th and early 20th centuries.
-
D.
Northern Pacific
The Northern Pacific is the northern portion of the Pacific Ocean, encompassing vast open waters and numerous island groups and archipelagos across the Northern Hemisphere.
-
E.
Spokane, Portland and Seattle Railway
The Spokane, Portland and Seattle Railway was an early 20th-century Pacific Northwest railroad line, backed by railroad magnate James J. Hill, that connected key cities along the Columbia River and facilitated regional trade and transportation.
- 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: Copper River and Northwestern Railway Triple: [Kennecott Mines National Historic Landmark, transportLinkedBy, Copper River and Northwestern Railway]
Generated description
The Copper River and Northwestern Railway was an early 20th-century Alaskan railroad built primarily to haul copper ore from the remote Kennecott mines to the coastal port of Cordova.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Copper River and Northwestern Railway Target entity description: The Copper River and Northwestern Railway was an early 20th-century Alaskan railroad built primarily to haul copper ore from the remote Kennecott mines to the coastal port of Cordova.
-
A.
Alaska Northern Railway
The Alaska Northern Railway was an early 20th-century rail line in Alaska that laid much of the groundwork for what later became the Alaska Railroad.
-
B.
Alaska Railroad
The Alaska Railroad is a state-owned railway system in Alaska that provides passenger and freight services across key regions including Anchorage, Fairbanks, and coastal ports.
-
C.
Northern Pacific Railway
The Northern Pacific Railway was a major transcontinental railroad in the northern United States that played a key role in opening and developing the Pacific Northwest in the late 19th and early 20th centuries.
-
D.
Northern Pacific
The Northern Pacific is the northern portion of the Pacific Ocean, encompassing vast open waters and numerous island groups and archipelagos across the Northern Hemisphere.
-
E.
Spokane, Portland and Seattle Railway
The Spokane, Portland and Seattle Railway was an early 20th-century Pacific Northwest railroad line, backed by railroad magnate James J. Hill, that connected key cities along the Columbia River and facilitated regional trade and transportation.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: transportLinkedBy Context triple: [Kennecott Mines National Historic Landmark, transportLinkedBy, Copper River and Northwestern Railway]
-
A.
hasTransportationRelation
Indicates a relationship in which one entity provides, uses, is connected by, or is otherwise associated with a means or mode of transportation to another entity or location.
-
B.
transportInterface
Indicates a relationship where one entity serves as the medium or mechanism through which another entity is transported or conveyed.
-
C.
transportHubType
Indicates the specific category or kind of transport hub associated with an entity (e.g., airport, train station, bus terminal).
-
D.
transportFrom
Indicates that something or someone is moved or carried away starting from a specified origin location.
-
E.
transportConnectionTo
chosen
Indicates a relationship where one entity provides or participates in a means of transportation that connects or leads to another entity.
- 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_69c69f276b108190af2cc790b6554544 |
completed | March 27, 2026, 3:15 p.m. |
| NER | Named-entity recognition | batch_69c6f5d1e1a4819090bf4cbacdbdc7d0 |
completed | March 27, 2026, 9:25 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c84614e8608190b6d683e4402a6275 |
completed | March 28, 2026, 9:20 p.m. |
| NEDg | Description generation | batch_69c847380f08819082d96a4a8e3143a4 |
completed | March 28, 2026, 9:25 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69c847b5787c81908bfe5b71a1494b54 |
completed | March 28, 2026, 9:27 p.m. |
| PD | Predicate disambiguation | batch_69c6f4d44e9481909813e073b194f6f4 |
completed | March 27, 2026, 9:21 p.m. |
Created at: March 27, 2026, 3:45 p.m.