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.

[Q]: proper question: What are ancient processes used to do? 
 disfluent question: What are ancient stratigraphers um wait processes used to do? 
 context: In the laboratory, stratigraphers analyze samples of stratigraphic sections that can be returned from the field, such as those from drill cores. Stratigraphers also analyze data from geophysical surveys that show the locations of stratigraphic units in the subsurface. Geophysical data and well logs can be combined to produce a better view of the subsurface, and stratigraphers often use computer programs to do this in three dimensions. Stratigraphers can then use these data to reconstruct ancient processes occurring on the surface of the Earth, interpret past environments, and locate areas for water, coal, and hydrocarbon extraction.
[A]: None


[Q]: proper question: What impact did the high school education movement have on the presence of unskilled workers? 
 disfluent question: What impact did the high school education movement have on the presence of high school students no of unskilled workers? 
 context: During the mass high school education movement from 1910–1940, there was an increase in skilled workers, which led to a decrease in the price of skilled labor. High school education during the period was designed to equip students with necessary skill sets to be able to perform at work. In fact, it differs from the present high school education, which is regarded as a stepping-stone to acquire college and advanced degrees. This decrease in wages caused a period of compression and decreased inequality between skilled and unskilled workers. Education is very important for the growth of the economy, however educational inequality in gender also influence towards the economy. Lagerlof and Galor stated that gender inequality in education can result to low economic growth, and continued gender inequality in education, thus creating a poverty trap. It is suggested that a large gap in male and female education may indicate backwardness and so may be associated with lower economic growth, which can explain why there is economic inequality between countries.
[A]: None


[Q]: proper question: What was the topic of the error? 
 disfluent question: Who or rather what was the topic of the error? 
 context: Former IPCC chairman Robert Watson has said The mistakes all appear to have gone in the direction of making it seem like climate change is more serious by overstating the impact. That is worrying. The IPCC needs to look at this trend in the errors and ask why it happened. Martin Parry, a climate expert who had been co-chair of the IPCC working group II, said that What began with a single unfortunate error over Himalayan glaciers has become a clamour without substance and the IPCC had investigated the other alleged mistakes, which were generally unfounded and also marginal to the assessment.
[A]:
Himalayan glaciers