Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Among the entities, try to find the best entity that is most likely to fill in "_" and classify the answers based on options.
Input: Kiev, Ukraine (CNN) -- Ukraine's President Viktor Yanukovych will return to work on Monday, after taking ill amid political unrest that has paralyzed the eastern European country. Yanukovych went on sick leave on Thursday with "acute respiratory disease," his office said. He is now feeling "good" after treatment and his condition has been assessed as "satisfactory," a statement on the presidential website said. Ukraine has been plunged into a deep political crisis that in the last week saw the Prime Minister and Cabinet resign, a controversial anti-protest law repealed, and the President signing off on a contested amnesty bill for anti-government protesters.Yanukovych is said to be feeling good after treatmentYanukovych went on sick leave Thursday with "acute respiratory disease"Thousands of protesters remain out in Kiev streets on SundayUkraine rattled by protests, then clashes, since November 
 Questions:Despite concessions last week from _, including repeal of the controversial law, Ukraine's opposition parties continue to call for constitutional reforms to shift power away from the president. (A) Kiev (B) Ukraine (C) CNN (D) Viktor Yanukovych (E) European (F) Cabinet
Output:
(D)