Triple

Target entity: Ukrainian Revolution of 1917–1921
Context triple: [Central Rada, significantEvent, Ukrainian Revolution of 1917–1921]

• A. Ukrainian War of Independence chosen
  The Ukrainian War of Independence was a complex series of military and political struggles (1917–1921) in which various Ukrainian, Bolshevik, White, Polish, and anarchist forces, including those led by Nestor Makhno, fought over the future and sovereignty of Ukraine following the collapse of the Russian Empire.
• B. All-Ukrainian Congress of Soviets
  The All-Ukrainian Congress of Soviets was the supreme governing and legislative body of Soviet Ukraine before the establishment of modern parliamentary institutions.
• C. Ukrainian national movement
  The Ukrainian national movement is a historical and political struggle for Ukrainian cultural identity, language rights, and state independence from foreign domination.
• D. European revolutions of 1917–1923
  The European revolutions of 1917–1923 were a wave of upheavals, including socialist, nationalist, and anti-imperial movements, that reshaped the political order of Europe in the aftermath of World War I and the Russian Revolution.
• E. Russian Revolution
  The Russian Revolution was a series of political upheavals in 1917 that overthrew the Tsarist autocracy and led to the rise of the Bolsheviks and the creation of the Soviet state.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.