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: Consider Input: proper question: Why do igneous rocks use gravel? 
 disfluent question: Why do igneous rocks find uh like use gravel? 
 context: The principle of inclusions and components states that, with sedimentary rocks, if inclusions (or clasts) are found in a formation, then the inclusions must be older than the formation that contains them. For example, in sedimentary rocks, it is common for gravel from an older formation to be ripped up and included in a newer layer. A similar situation with igneous rocks occurs when xenoliths are found. These foreign bodies are picked up as magma or lava flows, and are incorporated, later to cool in the matrix. As a result, xenoliths are older than the rock which contains them.

Output: None


Input: Consider Input: proper question: What was the fort that was being destroyed to be named? 
 disfluent question: How many, no let me ask; what was the fort that was being destroyed to be named? 
 context: Even before Washington returned, Dinwiddie had sent a company of 40 men under William Trent to that point, where in the early months of 1754 they began construction of a small stockaded fort. Governor Duquesne sent additional French forces under Claude-Pierre Pecaudy de Contrecœur to relieve Saint-Pierre during the same period, and Contrecœur led 500 men south from Fort Venango on April 5, 1754. When these forces arrived at the fort on April 16, Contrecœur generously allowed Trent's small company to withdraw. He purchased their construction tools to continue building what became Fort Duquesne.

Output: None


Input: Consider Input: proper question: What don't supporters of Islamism believe their views reflect? 
 disfluent question: What type no What don't supporters of Islamism believe their views reflect? 
 context: Islamism is a controversial concept not just because it posits a political role for Islam but also because its supporters believe their views merely reflect Islam, while the contrary idea that Islam is, or can be, apolitical is an error. Scholars and observers who do not believe that Islam is merely a political ideology include Fred Halliday, John Esposito and Muslim intellectuals like Javed Ahmad Ghamidi. Hayri Abaza argues the failure to distinguish between Islam and Islamism leads many in the West to support illiberal Islamic regimes, to the detriment of progressive moderates who seek to separate religion from politics.


Output: None