Holocene catastrophic flooding of the Black Sea

Target entity: Holocene catastrophic flooding of the Black Sea
Context triple: [William Ryan, proposed, Holocene catastrophic flooding of the Black Sea]

• A. Messinian Salinity Crisis (late Miocene)
  The Messinian Salinity Crisis (late Miocene) was a geological event during which the Mediterranean Sea nearly dried up after becoming isolated from the Atlantic, leading to massive salt deposition and dramatic environmental changes.
• B. Unified Deep Water System of European Russia
  The Unified Deep Water System of European Russia is an extensive network of interconnected rivers, canals, and reservoirs that enables continuous inland water transport across much of European Russia, linking major seas and industrial regions.
• C. 8.2 kiloyear event
  The 8.2 kiloyear event was a sudden, short-lived global cooling episode during the early Holocene, likely triggered by massive meltwater outbursts disrupting North Atlantic ocean circulation.
• D. 4.2 kiloyear event
  The 4.2 kiloyear event was a major global climatic downturn around 2200 BCE, marked by widespread aridification and cooling that is thought to have contributed to the collapse or transformation of several ancient civilizations.
• E. Great Ordovician Biodiversification Event
  The Great Ordovician Biodiversification Event was a profound evolutionary radiation during the Ordovician Period that saw a dramatic increase in marine biodiversity and the establishment of many major animal groups in Paleozoic oceans.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Holocene catastrophic flooding of the Black Sea
Target entity description: The Holocene catastrophic flooding of the Black Sea is a hypothesized prehistoric deluge in which Mediterranean waters are thought to have rapidly inundated the Black Sea basin, potentially inspiring ancient flood myths.

• A. Messinian Salinity Crisis (late Miocene)
  The Messinian Salinity Crisis (late Miocene) was a geological event during which the Mediterranean Sea nearly dried up after becoming isolated from the Atlantic, leading to massive salt deposition and dramatic environmental changes.
• B. Unified Deep Water System of European Russia
  The Unified Deep Water System of European Russia is an extensive network of interconnected rivers, canals, and reservoirs that enables continuous inland water transport across much of European Russia, linking major seas and industrial regions.
• C. 8.2 kiloyear event
  The 8.2 kiloyear event was a sudden, short-lived global cooling episode during the early Holocene, likely triggered by massive meltwater outbursts disrupting North Atlantic ocean circulation.
• D. 4.2 kiloyear event
  The 4.2 kiloyear event was a major global climatic downturn around 2200 BCE, marked by widespread aridification and cooling that is thought to have contributed to the collapse or transformation of several ancient civilizations.
• E. Great Ordovician Biodiversification Event
  The Great Ordovician Biodiversification Event was a profound evolutionary radiation during the Ordovician Period that saw a dramatic increase in marine biodiversity and the establishment of many major animal groups in Paleozoic oceans.
• F. None of above. chosen