question:
Her brother Leopold was Princess Charlotte's widower.
Who was Princess Charlotte married to until her death?

answer: yes

question:
Some of the most famous generals of the French Revolution also came from Alsace, notably Kellermann, the victor of Valmy, Kleber, who led the armies of the French Republic in Vendee and Westermann, who also fought in the Vendee.
Who led the armies of the French Republic in Vendee and Westermann?

answer: yes

question:
In addition to stipulations of non-aggression, the treaty included a secret protocol that divided territories of Romania, Poland, Lithuania, Latvia, Estonia, and Finland into German and Soviet "spheres of influence", anticipating potential "territorial and political rearrangements" of these countries.
The agreement between the Nazis and the Soviets split what countries up?

answer: yes

question:
The origins of al-Qaeda can be traced to the Soviet war in Afghanistan (December 1979 February 1989).
When did the Soviets leave Afghanistan?

answer:
yes