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.

proper question: What month did the BankAmericard creator resign?
disfluent question: What month did the BankAmericard creator rename no no um resign?
context: In September 1958, Bank of America launched a new product called BankAmericard in Fresno. After a troubled gestation during which its creator resigned, BankAmericard went on to become the first successful credit card; that is, a financial instrument that was usable across a large number of merchants and also allowed cardholders to revolve a balance (earlier financial products could do one or the other but not both). In 1976, BankAmericard was renamed and spun off into a separate company known today as Visa Inc.
None

proper question: What nationality aren't researchers Richard G. Wilkinson and Kate Pickett?
disfluent question: What social problems no what nationality aren't researchers Richard G. Wilkinson and Kate Pickett?
context: British researchers Richard G. Wilkinson and Kate Pickett have found higher rates of health and social problems (obesity, mental illness, homicides, teenage births, incarceration, child conflict, drug use), and lower rates of social goods (life expectancy by country, educational performance, trust among strangers, women's status, social mobility, even numbers of patents issued) in countries and states with higher inequality. Using statistics from 23 developed countries and the 50 states of the US, they found social/health problems lower in countries like Japan and Finland and states like Utah and New Hampshire with high levels of equality, than in countries (US and UK) and states (Mississippi and New York) with large differences in household income.
None

proper question: What were the Saxon Palace and Bruhl Palace in prewar Warsaw?
disfluent question: What building no sorry What were the Saxon Palace and Bruhl Palace in prewar Warsaw?
context: Exceptional examples of the bourgeois architecture of the later periods were not restored by the communist authorities after the war (like mentioned Kronenberg Palace and Insurance Company Rosja building) or they were rebuilt in socialist realism style (like Warsaw Philharmony edifice originally inspired by Palais Garnier in Paris). Despite that the Warsaw University of Technology building (18991902) is the most interesting of the late 19th-century architecture. Some 19th-century buildings in the Praga district (the Vistula's right bank) have been restored although many have been poorly maintained. Warsaw's municipal government authorities have decided to rebuild the Saxon Palace and the Bruhl Palace, the most distinctive buildings in prewar Warsaw.
most distinctive buildings