Does the sentence "The most important difference was that, while in most European countries the nobility lost power as the ruler strove for absolute monarchy, in Poland the reverse process occurred: the nobility actually gained power at the expense of the king, and the political system evolved into an oligarchy." provide a valid answer to the question "What did the ruler strive for?"

A: yes

Does the sentence "An event that happened in 1919 had a profound effect on him: During a riot, caused by the Communists, the police shot several unarmed people, including some of Popper's friends, when they tried to free party comrades from prison." provide a valid answer to the question "The 1919 riot involving Popper's comrades was part of what larger political move?"

A: no

Does the sentence "But it came to be realized that there is no finite set of statements about actual and possible sense-data from which we can deduce even a single physical-object statement." provide a valid answer to the question "How can't a finite set of statements be described?"

A: no

Does the sentence "Clarkson has since become the most successful Idol contestant internationally, with worldwide album sales of more than 23 million." provide a valid answer to the question "How many worldwide album sales has Kelly Clarkson had since winning Idol?"

A:
yes