Triple

T17114642
Position Surface form Disambiguated ID Type / Status
Subject Hangenberg black shales E415308 entity
Predicate associatedEvent P149 FINISHED
Object Hangenberg extinction event
The Hangenberg extinction event was a major Late Devonian mass extinction that caused widespread marine and terrestrial biodiversity loss and marks the transition into the Carboniferous period.
E89373 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: Hangenberg extinction event | Statement: [Hangenberg black shales, associatedEvent, Hangenberg extinction event]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Hangenberg extinction event
Context triple: [Hangenberg black shales, associatedEvent, Hangenberg extinction event]
  • A. Permian–Triassic mass extinction
    The Permian–Triassic mass extinction was the most severe biodiversity crisis in Earth's history, wiping out the majority of marine and terrestrial species around 252 million years ago and marking the boundary between the Paleozoic and Mesozoic eras.
  • B. Triassic–Jurassic extinction event
    The Triassic–Jurassic extinction event was a major mass extinction around 201 million years ago that wiped out many marine and terrestrial species, paving the way for dinosaurs to become the dominant land animals in the Jurassic Period.
  • C. Late Devonian extinction
    The Late Devonian extinction was a prolonged series of biodiversity crises around 375–359 million years ago that devastated marine life, especially reef ecosystems and armored fishes, and ranks among the largest mass extinctions in Earth’s history.
  • D. Frasnian–Famennian boundary
    The Frasnian–Famennian boundary marks a major Late Devonian mass extinction interval characterized by severe global environmental upheavals and widespread marine biodiversity loss.
  • E. Lomagundi event
    The Lomagundi event was a prolonged Paleoproterozoic episode of unusually high carbon isotope ratios in marine carbonates, interpreted as evidence for a major global increase in oxygen production and organic carbon burial.
  • 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: Hangenberg extinction event
Triple: [Hangenberg black shales, associatedEvent, Hangenberg extinction event]
Generated description
The Hangenberg extinction event was a major Late Devonian mass extinction that caused widespread marine and terrestrial biodiversity loss and marks the transition into the Carboniferous period.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Hangenberg extinction event
Target entity description: The Hangenberg extinction event was a major Late Devonian mass extinction that caused widespread marine and terrestrial biodiversity loss and marks the transition into the Carboniferous period.
  • A. Permian–Triassic mass extinction
    The Permian–Triassic mass extinction was the most severe biodiversity crisis in Earth's history, wiping out the majority of marine and terrestrial species around 252 million years ago and marking the boundary between the Paleozoic and Mesozoic eras.
  • B. Triassic–Jurassic extinction event
    The Triassic–Jurassic extinction event was a major mass extinction around 201 million years ago that wiped out many marine and terrestrial species, paving the way for dinosaurs to become the dominant land animals in the Jurassic Period.
  • C. Late Devonian extinction chosen
    The Late Devonian extinction was a prolonged series of biodiversity crises around 375–359 million years ago that devastated marine life, especially reef ecosystems and armored fishes, and ranks among the largest mass extinctions in Earth’s history.
  • D. Frasnian–Famennian boundary
    The Frasnian–Famennian boundary marks a major Late Devonian mass extinction interval characterized by severe global environmental upheavals and widespread marine biodiversity loss.
  • E. Lomagundi event
    The Lomagundi event was a prolonged Paleoproterozoic episode of unusually high carbon isotope ratios in marine carbonates, interpreted as evidence for a major global increase in oxygen production and organic carbon burial.
  • F. None of above.

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_69d886d090cc8190a39cb94992586905 completed April 10, 2026, 5:12 a.m.
NER Named-entity recognition batch_69e3e803ff848190b884fd2c3cc0ee48 completed April 18, 2026, 8:22 p.m.
NED1 Entity disambiguation (via context triple) batch_6a014145f7988190803d5c5e4f2705b0 completed May 11, 2026, 2:39 a.m.
NEDg Description generation batch_6a0141f8f8248190b239488fa1c4f0cb completed May 11, 2026, 2:42 a.m.
NED2 Entity disambiguation (via description) batch_6a01424e4cd881908e6ee726164c55f5 completed May 11, 2026, 2:43 a.m.
Created at: April 10, 2026, 5:35 a.m.