Triple
T9285537
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Northwestern Pacific Railroad |
E223383
|
entity |
| Predicate | hasTunnel |
P21069
|
FINISHED |
| Object |
Tunnel No. 1 (Marin County)
Tunnel No. 1 (Marin County) is a historic Northwestern Pacific Railroad tunnel in Marin County, California, that formed part of the early rail route connecting the North Bay to the broader regional rail network.
|
E789374
|
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: Tunnel No. 1 (Marin County) | Statement: [Northwestern Pacific Railroad, hasTunnel, Tunnel No. 1 (Marin County)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Tunnel No. 1 (Marin County) Context triple: [Northwestern Pacific Railroad, hasTunnel, Tunnel No. 1 (Marin County)]
-
A.
Tunnel No. 1
Tunnel No. 1 is a major water-supply tunnel that forms part of New York City’s underground distribution system.
-
B.
State Route 99 Tunnel
The State Route 99 Tunnel is a major underground highway tunnel in Seattle that replaced the Alaskan Way Viaduct to carry traffic along the State Route 99 corridor.
-
C.
Tunnel No. 2
Tunnel No. 2 is one of New York City’s major water distribution tunnels that helps convey drinking water from upstate reservoirs to the city’s boroughs.
-
D.
Sutro Tunnel
The Sutro Tunnel is a historic drainage and access tunnel driven into Nevada’s Comstock Lode in the 19th century to improve mine safety and operations.
-
E.
San Bernardino Tunnel
The San Bernardino Tunnel is a major road tunnel in the Swiss Alps that provides a key north–south transit route between German-speaking and Italian-speaking Switzerland.
- 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: Tunnel No. 1 (Marin County) Triple: [Northwestern Pacific Railroad, hasTunnel, Tunnel No. 1 (Marin County)]
Generated description
Tunnel No. 1 (Marin County) is a historic Northwestern Pacific Railroad tunnel in Marin County, California, that formed part of the early rail route connecting the North Bay to the broader regional rail network.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Tunnel No. 1 (Marin County) Target entity description: Tunnel No. 1 (Marin County) is a historic Northwestern Pacific Railroad tunnel in Marin County, California, that formed part of the early rail route connecting the North Bay to the broader regional rail network.
-
A.
Tunnel No. 1
Tunnel No. 1 is a major water-supply tunnel that forms part of New York City’s underground distribution system.
-
B.
State Route 99 Tunnel
The State Route 99 Tunnel is a major underground highway tunnel in Seattle that replaced the Alaskan Way Viaduct to carry traffic along the State Route 99 corridor.
-
C.
Tunnel No. 2
Tunnel No. 2 is one of New York City’s major water distribution tunnels that helps convey drinking water from upstate reservoirs to the city’s boroughs.
-
D.
Sutro Tunnel
The Sutro Tunnel is a historic drainage and access tunnel driven into Nevada’s Comstock Lode in the 19th century to improve mine safety and operations.
-
E.
San Bernardino Tunnel
The San Bernardino Tunnel is a major road tunnel in the Swiss Alps that provides a key north–south transit route between German-speaking and Italian-speaking Switzerland.
- 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_69ca8422ddf881908a3f8f876c9f53aa |
completed | March 30, 2026, 2:09 p.m. |
| NER | Named-entity recognition | batch_69cd081fe8cc8190b6c1b481c7129689 |
completed | April 1, 2026, 11:57 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d0b21d8f1081909b2493151fde4a5f |
completed | April 4, 2026, 6:39 a.m. |
| NEDg | Description generation | batch_69d0b3234d088190a8ed13b4d4772fb5 |
completed | April 4, 2026, 6:43 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69d0b3bcd5548190ba1af3d0fa72780a |
completed | April 4, 2026, 6:46 a.m. |
Created at: March 30, 2026, 7:35 p.m.