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: What do epithelial cells have at the oral end?
disfluent question: What do streamlines have at the oral end no what do epithelial cells have at the oral end?
context: The Beroida, also known as Nuda, have no feeding appendages, but their large pharynx, just inside the large mouth and filling most of the saclike body, bears macrocilia at the oral end. These fused bundles of several thousand large cilia are able to bite off pieces of prey that are too large to swallow whole almost always other ctenophores. In front of the field of macrocilia, on the mouth lips in some species of Beroe, is a pair of narrow strips of adhesive epithelial cells on the stomach wall that zip the mouth shut when the animal is not feeding, by forming intercellular connections with the opposite adhesive strip. This tight closure streamlines the front of the animal when it is pursuing prey.
[EX A]: None

[EX 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 19101940, 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.
[EX A]: None

[EX Q]: proper question: What has the university held since 1963 where large teams find items from a list?
disfluent question: What has the university done or no held since 1963 where large teams find items from a list?
context: Every May since 1987, the University of Chicago has held the University of Chicago Scavenger Hunt, in which large teams of students compete to obtain notoriously esoteric items from a list. Since 1963, the Festival of the Arts (FOTA) takes over campus for 710 days of exhibitions and interactive artistic endeavors. Every January, the university holds a week-long winter festival, Kuviasungnerk/Kangeiko, which include early morning exercise routines and fitness workshops. The university also annually holds a summer carnival and concert called Summer Breeze that hosts outside musicians, and is home to Doc Films, a student film society founded in 1932 that screens films nightly at the university. Since 1946, the university has organized the Latke-Hamantash Debate, which involves humorous discussions about the relative merits and meanings of latkes and hamantashen.
[EX A]:
None