Use a disfluent question or a proper question and find the answer to the question based on the given context or return None if an answer can't be found. A disfluent question is a question that has some interruptions in it while framing. A proper question is the correct form of the question without any disfluency.

[EX Q]: proper question: Who is the President of Afghanistan? 
 disfluent question: What is or no make that who is the President of Afghanistan? 
 context: Egyptian President Anwar Sadat – whose policies included opening Egypt to Western investment (infitah); transferring Egypt's allegiance from the Soviet Union to the United States; and making peace with Israel – released Islamists from prison and welcomed home exiles in tacit exchange for political support in his struggle against leftists. His encouraging of the emergence of the Islamist movement was said to have been imitated by many other Muslim leaders in the years that followed.  This gentlemen's agreement between Sadat and Islamists broke down in 1975 but not before Islamists came to completely dominate university student unions. Sadat was later assassinated and a formidable insurgency was formed in Egypt in the 1990s. The French government has also been reported to have promoted Islamist preachers in the hope of channeling Muslim energies into zones of piety and charity.
[EX A]: None

[EX Q]: proper question: In which century was the Grand Canal d'Alsace ended? 
 disfluent question: What carries er in which century was the Grand Canal d'Alsace ended? 
 context: The Upper Rhine region was changed significantly by a Rhine straightening program in the 19th Century. The rate of flow was increased and the ground water level fell significantly. Dead branches dried up and the amount of forests on the flood plains decreased sharply. On the French side, the Grand Canal d'Alsace was dug, which carries a significant part of the river water, and all of the traffic. In some places, there are large compensation pools, for example the huge Bassin de compensation de Plobsheim in Alsace.
[EX A]: None

[EX Q]: proper question: How many people died from the Black Death in Northern  Africa? 
 disfluent question: How many people died from the Black Death in Europe no no in Northern Africa rather? 
 context: The plague repeatedly returned to haunt Europe and the Mediterranean throughout the 14th to 17th centuries. According to Biraben, the plague was present somewhere in Europe in every year between 1346 and 1671. The Second Pandemic was particularly widespread in the following years: 1360–63; 1374; 1400; 1438–39; 1456–57; 1464–66; 1481–85; 1500–03; 1518–31; 1544–48; 1563–66; 1573–88; 1596–99; 1602–11; 1623–40; 1644–54; and 1664–67. Subsequent outbreaks, though severe, marked the retreat from most of Europe (18th century) and northern Africa (19th century). According to Geoffrey Parker, France alone lost almost a million people to the plague in the epidemic of 1628–31.
[EX A]:
None