Triple

T17479112

Position	Surface form	Disambiguated ID	Type / Status
Subject	1868 Hayward earthquake	`E425610`	entity
Predicate	precededBy	`P97`	FINISHED
Object	1865 San Francisco earthquake The 1865 San Francisco earthquake was a significant 19th-century seismic event that struck the San Francisco Bay Area, causing notable damage and foreshadowing larger regional earthquakes to come.	`E1272807`	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: 1865 San Francisco earthquake | Statement: [1868 Hayward earthquake, precededBy, 1865 San Francisco earthquake]

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

Target entity: 1865 San Francisco earthquake
Context triple: [1868 Hayward earthquake, precededBy, 1865 San Francisco earthquake]

A. 1906 San Francisco earthquake
The 1906 San Francisco earthquake was a devastating magnitude 7.8 seismic event that struck Northern California, causing widespread destruction and fires that nearly leveled San Francisco and became one of the worst natural disasters in U.S. history.
B. 1868 Hayward earthquake
The 1868 Hayward earthquake was a powerful and destructive seismic event that struck the San Francisco Bay Area in California, causing extensive damage and loss of life and serving as a key historical benchmark for seismic risk on the Hayward Fault.
C. 1989 Loma Prieta earthquake
The 1989 Loma Prieta earthquake was a powerful magnitude 6.9 quake in Northern California that caused widespread damage in the San Francisco Bay Area, including freeway collapses and the disruption of the World Series.
D. Loma Prieta
Loma Prieta is a prominent peak in California’s Santa Cruz Mountains, best known for lending its name to the devastating 1989 Loma Prieta earthquake.
E. 1983 Coalinga earthquake
The 1983 Coalinga earthquake was a powerful magnitude 6.5 seismic event in central California that caused significant damage to the town of Coalinga and surrounding areas.
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: 1865 San Francisco earthquake
Triple: [1868 Hayward earthquake, precededBy, 1865 San Francisco earthquake]

Generated description

The 1865 San Francisco earthquake was a significant 19th-century seismic event that struck the San Francisco Bay Area, causing notable damage and foreshadowing larger regional earthquakes to come.

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

Target entity: 1865 San Francisco earthquake
Target entity description: The 1865 San Francisco earthquake was a significant 19th-century seismic event that struck the San Francisco Bay Area, causing notable damage and foreshadowing larger regional earthquakes to come.

A. 1906 San Francisco earthquake
The 1906 San Francisco earthquake was a devastating magnitude 7.8 seismic event that struck Northern California, causing widespread destruction and fires that nearly leveled San Francisco and became one of the worst natural disasters in U.S. history.
B. 1868 Hayward earthquake
The 1868 Hayward earthquake was a powerful and destructive seismic event that struck the San Francisco Bay Area in California, causing extensive damage and loss of life and serving as a key historical benchmark for seismic risk on the Hayward Fault.
C. 1989 Loma Prieta earthquake
The 1989 Loma Prieta earthquake was a powerful magnitude 6.9 quake in Northern California that caused widespread damage in the San Francisco Bay Area, including freeway collapses and the disruption of the World Series.
D. Loma Prieta
Loma Prieta is a prominent peak in California’s Santa Cruz Mountains, best known for lending its name to the devastating 1989 Loma Prieta earthquake.
E. 1983 Coalinga earthquake
The 1983 Coalinga earthquake was a powerful magnitude 6.5 seismic event in central California that caused significant damage to the town of Coalinga and surrounding areas.
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_69d889dbc2e88190b18ea6115e819258`	completed	April 10, 2026, 5:25 a.m.
NER	Named-entity recognition	`batch_69e451be5fd08190aeaa12b3a6d6c6d4`	completed	April 19, 2026, 3:53 a.m.
NED1	Entity disambiguation (via context triple)	`batch_6a01c1faa20c8190910d429fbca4e6cb`	completed	May 11, 2026, 11:48 a.m.
NEDg	Description generation	`batch_6a01c6373f008190864593e8f582b707`	completed	May 11, 2026, 12:06 p.m.
NED2	Entity disambiguation (via description)	`batch_6a01c6d4313c819086b40432c738efcb`	completed	May 11, 2026, 12:08 p.m.

Created at: April 10, 2026, 5:48 a.m.