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 Input:
proper question: How many museums are in Warsaw? 
 disfluent question: How many posters are in Warsaw no sorry how many museums are there? 
 context: As interesting examples of expositions the most notable are: the world's first Museum of Posters boasting one of the largest collections of art posters in the world, Museum of Hunting and Riding and the Railway Museum. From among Warsaw's 60 museums, the most prestigious ones are National Museum with a collection of works whose origin ranges in time from antiquity till the present epoch as well as one of the best collections of paintings in the country including some paintings from Adolf Hitler's private collection, and Museum of the Polish Army whose set portrays the history of arms.

Ex Output:
60


Ex Input:
proper question: What cause city funding to increase? 
 disfluent question: What causes dissipated no city funding to increase? 
 context: Much of the city's tax base dissipated, leading to problems with funding education, sanitation, and traffic control within the city limits. In addition, residents in unincorporated suburbs had difficulty obtaining municipal services, such as sewage and building code enforcement. In 1958, a study recommended that the city of Jacksonville begin annexing outlying communities in order to create the needed tax base to improve services throughout the county. Voters outside the city limits rejected annexation plans in six referendums between 1960 and 1965.

Ex Output:
None


Ex Input:
proper question: When did British government take land for development of Ohio Country? 
 disfluent question: When did British government offer land to develop Ohio Country no wait when did they take the land for this development? 
 context: In 1749 the British government gave land to the Ohio Company of Virginia for the purpose of developing trade and settlements in the Ohio Country. The grant required that it settle 100 families in the territory, and construct a fort for their protection. But, as the territory was also claimed by Pennsylvania, both colonies began pushing for action to improve their respective claims. In 1750 Christopher Gist, acting on behalf of both Virginia and the company, explored the Ohio territory and opened negotiations with the Indian tribes at Logstown. He completed the 1752 Treaty of Logstown in which the local Indians, through their Half-King Tanacharison and an Iroquois representative, agreed to terms that included permission to build a strong house at the mouth of the Monongahela River (the site of present-day Pittsburgh, Pennsylvania). By the late 17th century, the Iroquois had pushed many tribes out of the Ohio Valley, and kept it as hunting ground by right of conquest.

Ex Output:

None