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: How old is the NCAA Division I Ivy League competition?
disfluent question: How old is the Oxford or no NCAA Division I Ivy League competition?
context: The Harvard Crimson competes in 42 intercollegiate sports in the NCAA Division I Ivy League. Harvard has an intense athletic rivalry with Yale University culminating in The Game, although the HarvardYale Regatta predates the football game. This rivalry, though, is put aside every two years when the Harvard and Yale Track and Field teams come together to compete against a combined Oxford University and Cambridge University team, a competition that is the oldest continuous international amateur competition in the world.
[EX A]: None

[EX Q]: proper question: Who manages construction projects and assumes financial responsibility for completing them?
disfluent question: Who manages the sector no manages the construction projects and assumes financial responsibility for completing them?
context: The Standard Industrial Classification and the newer North American Industry Classification System have a classification system for companies that perform or otherwise engage in construction. To recognize the differences of companies in this sector, it is divided into three subsectors: building construction, heavy and civil engineering construction, and specialty trade contractors. There are also categories for construction service firms (e.g., engineering, architecture) and construction managers (firms engaged in managing construction projects without assuming direct financial responsibility for completion of the construction project).
[EX A]: None

[EX Q]: proper question: What is QED short for?
disfluent question: What did actually tell me what QED is short for?
context: However, attempting to reconcile electromagnetic theory with two observations, the photoelectric effect, and the nonexistence of the ultraviolet catastrophe, proved troublesome. Through the work of leading theoretical physicists, a new theory of electromagnetism was developed using quantum mechanics. This final modification to electromagnetic theory ultimately led to quantum electrodynamics (or QED), which fully describes all electromagnetic phenomena as being mediated by waveparticles known as photons. In QED, photons are the fundamental exchange particle, which described all interactions relating to electromagnetism including the electromagnetic force.[Note 4]
[EX A]:
quantum electrodynamics