Definition: 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.
Input: proper question: In what year was the Darfur Report issued? 
 disfluent question: In what year was the Kalven or is it the Darfur Report, what year was it issued? 
 context: The university experienced its share of student unrest during the 1960s, beginning in 1962, when students occupied President George Beadle's office in a protest over the university's off-campus rental policies. After continued turmoil, a university committee in 1967 issued what became known as the Kalven Report. The report, a two-page statement of the university's policy in social and political action, declared that To perform its mission in the society, a university must sustain an extraordinary environment of freedom of inquiry and maintain an independence from political fashions, passions, and pressures. The report has since been used to justify decisions such as the university's refusal to divest from South Africa in the 1980s and Darfur in the late 2000s.
Output:
None