Triple

T675164
Position Surface form Disambiguated ID Type / Status
Subject Heisei E13061 entity
Predicate notableEventDuringEra P2107 FINISHED
Object 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.
E86077 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: 2011 Tōhoku earthquake and tsunami | Statement: [Heisei, notableEventDuringEra, 2011 Tōhoku earthquake and tsunami]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: 2011 Tōhoku earthquake and tsunami
Context triple: [Heisei, notableEventDuringEra, 2011 Tōhoku earthquake and tsunami]
  • A. 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.
  • B. 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.
  • C. 2004 Indian Ocean earthquake and tsunami
    The 2004 Indian Ocean earthquake and tsunami was a massive undersea megathrust earthquake off the coast of Sumatra that triggered devastating tsunamis across the Indian Ocean, killing over 200,000 people and becoming one of the deadliest natural disasters in recorded history.
  • D. Fukushima Daiichi nuclear disaster
    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.
  • E. 1755 Lisbon earthquake
    The 1755 Lisbon earthquake was a devastating seismic event that struck Portugal’s capital on All Saints’ Day, triggering massive fires and a tsunami, and profoundly influencing European philosophy, science, and urban planning.
  • 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: 2011 Tōhoku earthquake and tsunami
Triple: [Heisei, notableEventDuringEra, 2011 Tōhoku earthquake and tsunami]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: 2011 Tōhoku earthquake and tsunami
Target entity description: 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.
  • A. 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.
  • B. 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.
  • C. 2004 Indian Ocean earthquake and tsunami
    The 2004 Indian Ocean earthquake and tsunami was a massive undersea megathrust earthquake off the coast of Sumatra that triggered devastating tsunamis across the Indian Ocean, killing over 200,000 people and becoming one of the deadliest natural disasters in recorded history.
  • D. Fukushima Daiichi nuclear disaster
    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.
  • E. 1755 Lisbon earthquake
    The 1755 Lisbon earthquake was a devastating seismic event that struck Portugal’s capital on All Saints’ Day, triggering massive fires and a tsunami, and profoundly influencing European philosophy, science, and urban planning.
  • 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_69a4933d3bf88190972041cd8cf143b9 completed March 1, 2026, 7:27 p.m.
NER Named-entity recognition batch_69a4a518e6348190b467c2fab3fd1f11 completed March 1, 2026, 8:44 p.m.
NED1 Entity disambiguation (via context triple) batch_69a6374cc0d48190900e96a374ce35af completed March 3, 2026, 1:20 a.m.
NEDg Description generation batch_69a637b4c578819086dd60ee6224ceef completed March 3, 2026, 1:21 a.m.
NED2 Entity disambiguation (via description) batch_69a63860ec4c8190919115af097b9bfa completed March 3, 2026, 1:24 a.m.
Created at: March 1, 2026, 7:36 p.m.