Triple
T9446815
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Fukushima Daiichi Unit 2 |
E227784
|
entity |
| Predicate | event |
P1664
|
FINISHED |
| Object | Fukushima Daiichi nuclear disaster |
E42988
|
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: Fukushima Daiichi nuclear disaster | Statement: [Fukushima Daiichi Unit 2, event, Fukushima Daiichi nuclear disaster]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Fukushima Daiichi nuclear disaster Context triple: [Fukushima Daiichi Unit 2, event, Fukushima Daiichi nuclear disaster]
-
A.
Fukushima Daiichi nuclear disaster
chosen
The Fukushima Daiichi nuclear disaster was a 2011 catastrophic failure at a Japanese nuclear power plant triggered by a massive earthquake and tsunami, leading to core meltdowns, radioactive releases, and long-term environmental and policy impacts worldwide.
-
B.
Fukushima
Fukushima is a city in Japan’s Tohoku region, known as the capital of Fukushima Prefecture and for its role in agriculture, hot springs, and regional administration.
-
C.
Fukushima Daiichi Nuclear Power Plant
Fukushima Daiichi Nuclear Power Plant is a coastal Japanese nuclear power station in Ōkuma, Fukushima Prefecture, widely known as the site of the 2011 reactor meltdowns following a massive earthquake and tsunami.
-
D.
Chernobyl disaster
The Chernobyl disaster was a catastrophic 1986 nuclear power plant accident in Soviet-era Ukraine that released massive radioactive contamination across Europe and became one of the worst nuclear disasters in history.
-
E.
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.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69ca8439f8bc8190997f2ef40c9f0bc2 |
completed | March 30, 2026, 2:10 p.m. |
| NER | Named-entity recognition | batch_69cd7f35394c8190aa77528dabd6139c |
completed | April 1, 2026, 8:25 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d12268429c8190bf2fd0f3ea4dac4a |
completed | April 4, 2026, 2:38 p.m. |
Created at: March 30, 2026, 7:51 p.m.