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: Where is the office of Edward Harkness located? 
 disfluent question: Where is the office of State House no of Edward Harkness located? 
 context: Harvard's 209-acre (85 ha) main campus is centered on Harvard Yard in Cambridge, about 3 miles (5 km) west-northwest of the State House in downtown Boston, and extends into the surrounding Harvard Square neighborhood. Harvard Yard itself contains the central administrative offices and main libraries of the university, academic buildings including Sever Hall and University Hall, Memorial Church, and the majority of the freshman dormitories. Sophomore, junior, and senior undergraduates live in twelve residential Houses, nine of which are south of Harvard Yard along or near the Charles River. The other three are located in a residential neighborhood half a mile northwest of the Yard at the Quadrangle (commonly referred to as the Quad), which formerly housed Radcliffe College students until Radcliffe merged its residential system with Harvard. Each residential house contains rooms for undergraduates, House masters, and resident tutors, as well as a dining hall and library. The facilities were made possible by a gift from Yale University alumnus Edward Harkness.
[EX A]: None

[EX Q]: proper question: What percentage of whites are hispanic or latino? 
 disfluent question: Which or make that what percentage of whites are hispanic or latino? 
 context: As of the census of 2000, there were 427,652 people, 140,079 households, and 97,915 families residing in the city. The population density was 4,097.9 people per square mile (1,582.2/km²). There were 149,025 housing units at an average density of 1,427.9 square miles (3,698 km2). The racial makeup of the city was 50.2% White, 8.4% Black or African American, 1.6% Native American, 11.2% Asian (about a third of which is Hmong), 0.1% Pacific Islander, 23.4% from other races, and 5.2% from two or more races. Hispanic or Latino of any race were 39.9% of the population.
[EX A]: None

[EX Q]: proper question: In what century did modern bubonic plague strike Europe? 
 disfluent question: In what century did modern bubonic plague separate no rather struck Europe? 
 context: In addition to arguing that the rat population was insufficient to account for a bubonic plague pandemic, sceptics of the bubonic plague theory point out that the symptoms of the Black Death are not unique (and arguably in some accounts may differ from bubonic plague); that transference via fleas in goods was likely to be of marginal significance; and that the DNA results may be flawed and might not have been repeated elsewhere, despite extensive samples from other mass graves. Other arguments include the lack of accounts of the death of rats before outbreaks of plague between the 14th and 17th centuries; temperatures that are too cold in northern Europe for the survival of fleas; that, despite primitive transport systems, the spread of the Black Death was much faster than that of modern bubonic plague; that mortality rates of the Black Death appear to be very high; that, while modern bubonic plague is largely endemic as a rural disease, the Black Death indiscriminately struck urban and rural areas; and that the pattern of the Black Death, with major outbreaks in the same areas separated by 5 to 15 years, differs from modern bubonic plague—which often becomes endemic for decades with annual flare-ups.
[EX A]:
None