Triple
T18514782
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Mount Tamalpais Scenic Railway |
E452430
|
entity |
| Predicate | nickname |
P55
|
FINISHED |
| Object |
Crookedest Railroad in the World
The "Crookedest Railroad in the World" was a famously winding scenic railway on Mount Tamalpais in California, known for its numerous sharp curves and picturesque mountain views.
|
E1328814
|
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: Crookedest Railroad in the World | Statement: [Mount Tamalpais Scenic Railway, nickname, Crookedest Railroad in the World]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Crookedest Railroad in the World Context triple: [Mount Tamalpais Scenic Railway, nickname, Crookedest Railroad in the World]
-
A.
Royal Gorge Route Railroad
The Royal Gorge Route Railroad is a scenic heritage railway in Colorado that offers passenger excursions through the dramatic Royal Gorge along the Arkansas River.
-
B.
Santanoni wagon road
The Santanoni wagon road is a historic carriage route in New York’s Adirondack Mountains that once provided access to the Great Camp Santanoni estate.
-
C.
Calico Railroad
Calico Railroad is a themed narrow-gauge train attraction that recreates an Old West mining railroad experience for guests.
-
D.
The Standard Railroad of the World
The Standard Railroad of the World was the proud slogan and nickname of the Pennsylvania Railroad, once one of the largest and most influential railroads in the United States.
-
E.
Perkiomen Railroad
Perkiomen Railroad was a historic rail line in southeastern Pennsylvania that later became the basis for the modern Perkiomen Trail.
- 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: Crookedest Railroad in the World Triple: [Mount Tamalpais Scenic Railway, nickname, Crookedest Railroad in the World]
Generated description
The "Crookedest Railroad in the World" was a famously winding scenic railway on Mount Tamalpais in California, known for its numerous sharp curves and picturesque mountain views.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Crookedest Railroad in the World Target entity description: The "Crookedest Railroad in the World" was a famously winding scenic railway on Mount Tamalpais in California, known for its numerous sharp curves and picturesque mountain views.
-
A.
Royal Gorge Route Railroad
The Royal Gorge Route Railroad is a scenic heritage railway in Colorado that offers passenger excursions through the dramatic Royal Gorge along the Arkansas River.
-
B.
Santanoni wagon road
The Santanoni wagon road is a historic carriage route in New York’s Adirondack Mountains that once provided access to the Great Camp Santanoni estate.
-
C.
Calico Railroad
Calico Railroad is a themed narrow-gauge train attraction that recreates an Old West mining railroad experience for guests.
-
D.
The Standard Railroad of the World
The Standard Railroad of the World was the proud slogan and nickname of the Pennsylvania Railroad, once one of the largest and most influential railroads in the United States.
-
E.
Perkiomen Railroad
Perkiomen Railroad was a historic rail line in southeastern Pennsylvania that later became the basis for the modern Perkiomen Trail.
- 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_69d8d386df84819092355ebb260d848e |
completed | April 10, 2026, 10:40 a.m. |
| NER | Named-entity recognition | batch_69e53349415c8190b989b536e2d1c40a |
completed | April 19, 2026, 7:55 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a04916c1cb88190889ad7d1c1dc4279 |
completed | May 13, 2026, 2:57 p.m. |
| NEDg | Description generation | batch_6a04921b1a508190b8bb6d6c4597ab99 |
completed | May 13, 2026, 3 p.m. |
| NED2 | Entity disambiguation (via description) | batch_6a0492ba4ea08190b59510b221ad5d21 |
completed | May 13, 2026, 3:03 p.m. |
Created at: April 10, 2026, 11:36 a.m.