Given the task definition and input, reply with output. 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.

proper question: Mandatory Committees exists in the fifth session of what?
disfluent question: In the fifth session, what type of committee, no mandatory committees exist in what?
context: Committees comprise a small number of MSPs, with membership reflecting the balance of parties across Parliament. There are different committees with their functions set out in different ways. Mandatory Committees are committees which are set down under the Scottish Parliament's standing orders, which govern their remits and proceedings. The current Mandatory Committees in the fourth Session of the Scottish Parliament are: Public Audit; Equal Opportunities; European and External Relations; Finance; Public Petitions; Standards, Procedures and Public Appointments; and Delegated Powers and Law Reform.
None