Triple

T38488141

Position	Surface form	Disambiguated ID	Type / Status
Subject	Switchback Railroad Trail	`E917976`	entity
Predicate	followsRouteOf	`P2127`	FINISHED
Object	Switchback Railroad Switchback Railroad was one of the earliest American gravity railroads, originally built in Pennsylvania’s coal region and later famed as a pioneering tourist attraction and precursor to modern roller coasters.	`E2270662`	NE FINISHED

How this triple was built (2 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: Switchback Railroad | Statement: [Switchback Railroad Trail, followsRouteOf, Switchback Railroad]

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: Switchback Railroad
Triple: [Switchback Railroad Trail, followsRouteOf, Switchback Railroad]

Generated description

Switchback Railroad was one of the earliest American gravity railroads, originally built in Pennsylvania’s coal region and later famed as a pioneering tourist attraction and precursor to modern roller coasters.

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_69f76e9894208190a129a553a60ca58c`	completed	May 3, 2026, 3:49 p.m.
NER	Named-entity recognition	`batch_69fcd23d627481908bfceb4dcf2634ef`	completed	May 7, 2026, 5:56 p.m.
NED1	Entity disambiguation (via context triple)	`batch_6a41ccc841f48190b41e8ae652e37d92`	completed	June 29, 2026, 1:39 a.m.
NEDg	Description generation	`batch_6a41cd65478c8190a2e6b48d8a84a1e4`	completed	June 29, 2026, 1:41 a.m.
NED2	Entity disambiguation (via description)	`batch_6a41cdf9018c81909d40e3ca43781047`	completed	June 29, 2026, 1:44 a.m.

Created at: May 3, 2026, 4:31 p.m.