Triple

T36675466

Position	Surface form	Disambiguated ID	Type / Status
Subject	Cab-forward steam locomotives	`E905529`	entity
Predicate	notableExample	`P1503`	FINISHED
Object	Southern Pacific AC-9 class The Southern Pacific AC-9 class was a group of massive articulated steam locomotives built in the late 1930s for heavy freight service, distinguished by their conventional cab-behind-boiler layout despite being closely related to the railroad’s famous cab-forward designs.	`E2210163`	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: Southern Pacific AC-9 class | Statement: [Cab-forward steam locomotives, notableExample, Southern Pacific AC-9 class]

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: Southern Pacific AC-9 class
Triple: [Cab-forward steam locomotives, notableExample, Southern Pacific AC-9 class]

Generated description

The Southern Pacific AC-9 class was a group of massive articulated steam locomotives built in the late 1930s for heavy freight service, distinguished by their conventional cab-behind-boiler layout despite being closely related to the railroad’s famous cab-forward designs.

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_69f76e7011dc819082b324f18b756a1b`	completed	May 3, 2026, 3:49 p.m.
NER	Named-entity recognition	`batch_69f7c7a1e71081909b8eebef98c15437`	completed	May 3, 2026, 10:09 p.m.
NED1	Entity disambiguation (via context triple)	`batch_6a3e8c1bbe9c81909261e9c288da73c0`	completed	June 26, 2026, 2:26 p.m.
NEDg	Description generation	`batch_6a3e9bc7edd48190822561cc620b4e6b`	completed	June 26, 2026, 3:33 p.m.
NED2	Entity disambiguation (via description)	`batch_6a3ea0e383e081909dbc3c557aae2054`	completed	June 26, 2026, 3:55 p.m.

Created at: May 3, 2026, 4:12 p.m.