<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (March 2012) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (March 2012) (Learn how and when to remove this template message) </Td> </Tr> <Table> <Tr> <Th_colspan="2"> Constituent Assembly of India </Th> </Tr> <Tr> <Td_colspan="2"> Seal of the Constituent Assembly . </Td> </Tr> <Tr> <Th_colspan="2"> Type </Th> </Tr> <Tr> <Th> Type </Th> <Td> Unicameral </Td> </Tr> <Tr> <Th_colspan="2"> History </Th> </Tr> <Tr> <Th> Founded </Th> <Td> 6 December 1946 (1946 - 12 - 06) </Td> </Tr> <Tr> <Th> Disbanded </Th> <Td> 24 January 1950 (1950 - 01 - 24) </Td> </Tr> <Tr> <Th> Preceded by </Th> <Td> Imperial Legislative Council </Td> </Tr> <Tr> <Th> Succeeded by </Th> <Td> Parliament of India </Td> </Tr> <Tr> <Th_colspan="2"> Leadership </Th> </Tr> <Tr> <Th> Temporary Chairman </Th> <Td> Sachchidananda Sinha, INC </Td> </Tr> <Tr> <Th> President </Th> <Td> Dr. Rajendra Prasad, INC </Td> </Tr> <Tr> <Th> Chairman of the drafting committee </Th> <Td> Dr. B.R. Ambedkar, SCF </Td> </Tr> <Tr> <Th> Vice Presidents </Th> <Td> Harendra Coomar Mookerjee V.T. Krishnamachari </Td> </Tr> <Tr> <Th> Legal Advisor </Th> <Td> B.N. Rau </Td> </Tr> <Tr> <Th_colspan="2"> Structure </Th> </Tr> <Tr> <Th> Seats </Th> <Td> 389 (Dec. 1946 - June 1947) 299 (June 1947 - Jan. 1950) </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Political groups </Th> <Td> INC: 208 seats AIML: 73 seats Others: 15 seats Princely States: 93 seats </Td> </Tr> <Tr> <Th_colspan="2"> Elections </Th> </Tr> <Tr> <Th> Voting system </Th> <Td> First past the post </Td> </Tr> <Tr> <Th_colspan="2"> Meeting place </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> House of Parliament, New Delhi </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Constituent Assembly of India </Th> </Tr>

Who presided over the first meeting of indian constituent assembly