Triple
T4566140
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Old Railroad Grade |
E121913
|
entity |
| Predicate | followsRouteOf |
P2127
|
FINISHED |
| Object |
Mount Tamalpais Scenic Railway
Mount Tamalpais Scenic Railway was a historic early-20th-century tourist railroad in Marin County, California, famed for its winding “Crookedest Railroad in the World” route to the summit of Mount Tamalpais.
|
E452430
|
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: Mount Tamalpais Scenic Railway | Statement: [Old Railroad Grade, followsRouteOf, Mount Tamalpais Scenic Railway]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Mount Tamalpais Scenic Railway Context triple: [Old Railroad Grade, followsRouteOf, Mount Tamalpais Scenic Railway]
-
A.
Strasburg Rail Road
Strasburg Rail Road is a historic heritage railway in Pennsylvania that operates steam-powered excursion trains and is one of the oldest continuously operating railroads in the United States.
-
B.
Incline Railway
Incline Railway is a historic funicular railway in Chattanooga, Tennessee, known for its steep ascent up Lookout Mountain and its popularity as a scenic tourist attraction.
-
C.
Scenic Railway
Scenic Railway is a steeply inclined passenger railway in Katoomba’s Blue Mountains, famous for offering dramatic cliffside and rainforest views.
-
D.
Adirondack Scenic Railroad (historic)
Adirondack Scenic Railroad (historic) was a heritage railway that operated tourist excursions through New York’s Adirondack Mountains, showcasing the region’s scenic landscapes and railroad history.
-
E.
Angels Flight Railway
Angels Flight Railway is a historic narrow-gauge funicular in Downtown Los Angeles that carries passengers up and down the steep Bunker Hill slope.
- 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: Mount Tamalpais Scenic Railway Triple: [Old Railroad Grade, followsRouteOf, Mount Tamalpais Scenic Railway]
Generated description
Mount Tamalpais Scenic Railway was a historic early-20th-century tourist railroad in Marin County, California, famed for its winding “Crookedest Railroad in the World” route to the summit of Mount Tamalpais.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Mount Tamalpais Scenic Railway Target entity description: Mount Tamalpais Scenic Railway was a historic early-20th-century tourist railroad in Marin County, California, famed for its winding “Crookedest Railroad in the World” route to the summit of Mount Tamalpais.
-
A.
Strasburg Rail Road
Strasburg Rail Road is a historic heritage railway in Pennsylvania that operates steam-powered excursion trains and is one of the oldest continuously operating railroads in the United States.
-
B.
Incline Railway
Incline Railway is a historic funicular railway in Chattanooga, Tennessee, known for its steep ascent up Lookout Mountain and its popularity as a scenic tourist attraction.
-
C.
Scenic Railway
Scenic Railway is a steeply inclined passenger railway in Katoomba’s Blue Mountains, famous for offering dramatic cliffside and rainforest views.
-
D.
Adirondack Scenic Railroad (historic)
Adirondack Scenic Railroad (historic) was a heritage railway that operated tourist excursions through New York’s Adirondack Mountains, showcasing the region’s scenic landscapes and railroad history.
-
E.
Angels Flight Railway
Angels Flight Railway is a historic narrow-gauge funicular in Downtown Los Angeles that carries passengers up and down the steep Bunker Hill slope.
- 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_69bd463f156881908a99aca69c5721ac |
completed | March 20, 2026, 1:06 p.m. |
| NER | Named-entity recognition | batch_69bd589cde9081909b84186d700fc463 |
completed | March 20, 2026, 2:24 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69bdc5ad84c88190a99d39666d2b2af5 |
completed | March 20, 2026, 10:09 p.m. |
| NEDg | Description generation | batch_69bdc7c68b2481908611ed7f18e8ed67 |
completed | March 20, 2026, 10:18 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69bdc7faa474819096a63807f6db0b21 |
completed | March 20, 2026, 10:19 p.m. |
Created at: March 20, 2026, 1:09 p.m.