Triple

T3646888

Position	Surface form	Disambiguated ID	Type / Status
Subject	Nankai Trough	`E77321`	entity
Predicate	lastMajorEarthquakeSequence	`P15517`	FINISHED
Object	1946 Nankai earthquake The 1946 Nankai earthquake was a powerful megathrust earthquake off the coast of southwestern Japan that generated a destructive tsunami and caused widespread damage and casualties in the Nankai region.	`E377071`	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: 1946 Nankai earthquake | Statement: [Nankai Trough, lastMajorEarthquakeSequence, 1946 Nankai earthquake]

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

Target entity: 1946 Nankai earthquake
Context triple: [Nankai Trough, lastMajorEarthquakeSequence, 1946 Nankai earthquake]

A. 1944 Tonankai earthquake
The 1944 Tonankai earthquake was a powerful undersea megathrust earthquake off the coast of Japan that generated a destructive tsunami and caused extensive damage and loss of life in the Tōkai and Kii Peninsula regions during World War II.
B. Great Kanto earthquake
The Great Kanto earthquake was a devastating 1923 seismic disaster that struck the Tokyo-Yokohama region of Japan, causing massive destruction and loss of life.
C. Great Hanshin earthquake
The Great Hanshin earthquake was a devastating 1995 seismic disaster in Japan that caused widespread destruction and loss of life, particularly in the city of Kobe.
D. 2011 Tōhoku earthquake and tsunami
The 2011 Tōhoku earthquake and tsunami was a devastating magnitude 9.0 undersea megathrust earthquake off Japan’s northeastern coast that triggered massive tsunamis, widespread destruction, and the Fukushima Daiichi nuclear disaster.
E. 2005 Nias–Simeulue earthquake
The 2005 Nias–Simeulue earthquake was a powerful magnitude 8.6 megathrust earthquake off the coast of northern Sumatra that caused widespread destruction and significant casualties in Indonesia.
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: 1946 Nankai earthquake
Triple: [Nankai Trough, lastMajorEarthquakeSequence, 1946 Nankai earthquake]

Generated description

The 1946 Nankai earthquake was a powerful megathrust earthquake off the coast of southwestern Japan that generated a destructive tsunami and caused widespread damage and casualties in the Nankai region.

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

Target entity: 1946 Nankai earthquake
Target entity description: The 1946 Nankai earthquake was a powerful megathrust earthquake off the coast of southwestern Japan that generated a destructive tsunami and caused widespread damage and casualties in the Nankai region.

A. 1944 Tonankai earthquake
The 1944 Tonankai earthquake was a powerful undersea megathrust earthquake off the coast of Japan that generated a destructive tsunami and caused extensive damage and loss of life in the Tōkai and Kii Peninsula regions during World War II.
B. Great Kanto earthquake
The Great Kanto earthquake was a devastating 1923 seismic disaster that struck the Tokyo-Yokohama region of Japan, causing massive destruction and loss of life.
C. Great Hanshin earthquake
The Great Hanshin earthquake was a devastating 1995 seismic disaster in Japan that caused widespread destruction and loss of life, particularly in the city of Kobe.
D. 2011 Tōhoku earthquake and tsunami
The 2011 Tōhoku earthquake and tsunami was a devastating magnitude 9.0 undersea megathrust earthquake off Japan’s northeastern coast that triggered massive tsunamis, widespread destruction, and the Fukushima Daiichi nuclear disaster.
E. 2005 Nias–Simeulue earthquake
The 2005 Nias–Simeulue earthquake was a powerful magnitude 8.6 megathrust earthquake off the coast of northern Sumatra that caused widespread destruction and significant casualties in Indonesia.
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_69ad85de1b988190a45f8dbfebc806fc`	completed	March 8, 2026, 2:21 p.m.
NER	Named-entity recognition	`batch_69adc3895198819090a17a8894e91d00`	completed	March 8, 2026, 6:44 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69b48836f5d08190bbf0b6410ed6f766`	completed	March 13, 2026, 9:57 p.m.
NEDg	Description generation	`batch_69b48afc27d48190b8ae34f3b167ce79`	completed	March 13, 2026, 10:09 p.m.
NED2	Entity disambiguation (via description)	`batch_69b4a3ee82b88190a7dd5fceff04728c`	completed	March 13, 2026, 11:55 p.m.

Created at: March 8, 2026, 3:24 p.m.