Triple
T4566141
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Old Railroad Grade |
E121913
|
entity |
| Predicate | usesFormerInfrastructureOf |
P44581
|
FINISHED |
| Object | Mount Tamalpais Scenic Railway |
E452430
|
NE FINISHED |
How this triple was built (3 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, usesFormerInfrastructureOf, 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, usesFormerInfrastructureOf, Mount Tamalpais Scenic Railway]
-
A.
Mount Tamalpais Scenic Railway
chosen
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.
-
B.
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.
-
C.
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.
-
D.
Scenic Railway
Scenic Railway is a steeply inclined passenger railway in Katoomba’s Blue Mountains, famous for offering dramatic cliffside and rainforest views.
-
E.
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.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: usesFormerInfrastructureOf Context triple: [Old Railroad Grade, usesFormerInfrastructureOf, Mount Tamalpais Scenic Railway]
-
A.
usesInfrastructure
Indicates that one entity makes use of, depends on, or operates through the infrastructure provided or managed by another entity.
-
B.
formerlyUsedBy
Indicates that an entity was used by another entity in the past but is no longer in use by that entity.
-
C.
infrastructureReuse
chosen
Indicates that existing infrastructure is being used again for a new or continued purpose instead of building or deploying entirely new infrastructure.
-
D.
predecessorInfrastructureOwner
Indicates that one infrastructure owner previously held ownership or responsibility before another in a temporal succession.
-
E.
isPartOfInfrastructure
Indicates that something belongs to, is included within, or functions as a component of a larger infrastructure system.
- F. None of above.
Provenance (4 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_69bdd3b560a08190a485e9ec45e0f0f8 |
completed | March 20, 2026, 11:09 p.m. |
| PD | Predicate disambiguation | batch_69bd52254c648190a5144cfe8fa7e409 |
completed | March 20, 2026, 1:56 p.m. |
Created at: March 20, 2026, 1:09 p.m.