Triple

T1742174

Position	Surface form	Disambiguated ID	Type / Status
Subject	First Transcontinental Railroad	`E38256`	entity
Predicate	significantEvent	`P259`	FINISHED
Object	Golden Spike ceremony The Golden Spike ceremony was the 1869 event at Promontory Summit, Utah, that marked the completion of the United States’ First Transcontinental Railroad by symbolically joining its eastern and western sections.	`E193053`	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: Golden Spike ceremony | Statement: [First Transcontinental Railroad, significantEvent, Golden Spike ceremony]

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Golden Spike ceremony
Context triple: [First Transcontinental Railroad, significantEvent, Golden Spike ceremony]

A. Golden Spike Tower
Golden Spike Tower is an observation tower and visitor attraction in North Platte, Nebraska, offering panoramic views of Union Pacific’s massive Bailey Yard, one of the world’s largest railroad classification yards.
B. Centennial Flame
The Centennial Flame is an eternal flame and fountain on Parliament Hill in Ottawa that commemorates the 100th anniversary of Canadian Confederation.
C. Golden Gate International Exposition
The Golden Gate International Exposition was a world’s fair held in San Francisco Bay in 1939–1940 to celebrate the completion of the Golden Gate and Bay Bridges and showcase Pacific Rim cultures and technological progress.
D. National Transcontinental Railway
The National Transcontinental Railway was a historic Canadian transcontinental rail line built in the early 20th century to link eastern and western Canada and later absorbed into the Canadian National Railway system.
E. California Pacific International Exposition
The California Pacific International Exposition was a 1935–1936 world's fair in San Diego that showcased art, architecture, and international exhibits to promote the city and its development.
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: Golden Spike ceremony
Triple: [First Transcontinental Railroad, significantEvent, Golden Spike ceremony]

Generated description

The Golden Spike ceremony was the 1869 event at Promontory Summit, Utah, that marked the completion of the United States’ First Transcontinental Railroad by symbolically joining its eastern and western sections.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Golden Spike ceremony
Target entity description: The Golden Spike ceremony was the 1869 event at Promontory Summit, Utah, that marked the completion of the United States’ First Transcontinental Railroad by symbolically joining its eastern and western sections.

A. Golden Spike Tower
Golden Spike Tower is an observation tower and visitor attraction in North Platte, Nebraska, offering panoramic views of Union Pacific’s massive Bailey Yard, one of the world’s largest railroad classification yards.
B. Centennial Flame
The Centennial Flame is an eternal flame and fountain on Parliament Hill in Ottawa that commemorates the 100th anniversary of Canadian Confederation.
C. Golden Gate International Exposition
The Golden Gate International Exposition was a world’s fair held in San Francisco Bay in 1939–1940 to celebrate the completion of the Golden Gate and Bay Bridges and showcase Pacific Rim cultures and technological progress.
D. National Transcontinental Railway
The National Transcontinental Railway was a historic Canadian transcontinental rail line built in the early 20th century to link eastern and western Canada and later absorbed into the Canadian National Railway system.
E. California Pacific International Exposition
The California Pacific International Exposition was a 1935–1936 world's fair in San Diego that showcased art, architecture, and international exhibits to promote the city and its development.
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_69a8862b01a48190ab47209063af82d9`	completed	March 4, 2026, 7:21 p.m.
NER	Named-entity recognition	`batch_69aa63c6d21c8190809bedaa798e2b14`	completed	March 6, 2026, 5:19 a.m.
NED1	Entity disambiguation (via context triple)	`batch_69ad8b0ab7008190a2fafe1c8ac55ac4`	completed	March 8, 2026, 2:43 p.m.
NEDg	Description generation	`batch_69ad957f64c48190862a701a94098bbf`	completed	March 8, 2026, 3:27 p.m.
NED2	Entity disambiguation (via description)	`batch_69ad97b974708190adfffebee41a6fcd`	completed	March 8, 2026, 3:37 p.m.

Created at: March 4, 2026, 7:30 p.m.