<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 . (January 2018) (Learn how and when to remove this template message) </Td> </Tr> <P> Coordinates: 28 ° 37 ′ 0" N 77 ° 12 ′ 30" E ﻿ / ﻿ 28.61667 ° N 77.20833 ° E ﻿ / 28.61667; 77.20833 </P> <Table> <Tr> <Th_colspan="2"> Rajya Sabha Council of States </Th> </Tr> <Tr> <Td_colspan="2"> Emblem of India </Td> </Tr> <Tr> <Th_colspan="2"> Type </Th> </Tr> <Tr> <Th> Type </Th> <Td> Upper house of the Parliament of India </Td> </Tr> <Tr> <Th> Term limits </Th> <Td> 6 years </Td> </Tr> <Tr> <Th_colspan="2"> Leadership </Th> </Tr> <Tr> <Th> Chairman (Vice-President) </Th> <Td> Venkaiah Naidu Since 11 August 2017 </Td> </Tr> <Tr> <Th> Deputy Chairman </Th> <Td> Harivansh Narayan Singh, JD (U) Since 9 August 2018 </Td> </Tr> <Tr> <Th> Leader of the House </Th> <Td> Arun Jaitley, BJP Since 2 June 2014 </Td> </Tr> <Tr> <Th> Leader of the Opposition </Th> <Td> Ghulam Nabi Azad, INC Since 8 June 2014 </Td> </Tr> <Tr> <Th_colspan="2"> Structure </Th> </Tr> <Tr> <Th> Seats </Th> <Td> <P> 245 (233 Elected + 12 Nominated by the President) </P> 1 Vacant (1 Elected Seat) </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Political groups </Th> <Td> <P> Government coalition (89) National Democratic Alliance (89) </P> <Ul> <Li> BJP (73) </Li> <Li> JD (U) (6) </Li> <Li> SAD (3) </Li> <Li> SS (3) </Li> <Li> BPF (1) </Li> <Li> NPF (1) </Li> <Li> RPI (A) (1) </Li> <Li> SDF (1) </Li> </Ul> <P> Opposition (155) United Progressive Alliance (57) </P> <Ul> <Li> INC (50) </Li> <Li> DMK (4) </Li> <Li> IUML (1) </Li> <Li> JD (S) (1) </Li> <Li> KC (M) (1) </Li> </Ul> <P> Janata Parivar Alliance (6) </P> <Ul> <Li> RJD (5) </Li> <Li> INLD (1) </Li> </Ul> <P> Other Parties (82) </P> <Ul> <Li> AIADMK (13) </Li> <Li> AITC (13) </Li> <Li> SP (13) </Li> <Li> BJD (9) </Li> <Li> TDP (6) </Li> <Li> TRS (6) </Li> <Li> CPI (M) (5) </Li> <Li> BSP (4) </Li> <Li> NCP (4) </Li> <Li> AAP (3) </Li> <Li> CPI (2) </Li> <Li> JKPDP (2) </Li> <Li> YSRCP (2) </Li> </Ul> <P> Others (10) </P> <Ul> <Li> Independents (6) </Li> <Li> Nominated (4) </Li> </Ul> <P> Vacant (1) </P> <Ul> <Li> Vacant (1) </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Elections </Th> </Tr> <Tr> <Th> Voting system </Th> <Td> Single transferable vote </Td> </Tr> <Tr> <Th> Last election </Th> <Td> 16 January, 23 March and 21 June 2018 </Td> </Tr> <Tr> <Th> Next election </Th> <Td> May - June 2019 </Td> </Tr> <Tr> <Th_colspan="2"> Meeting place </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> Chamber of Rajya Sabha, Sansad Bhavan, Sansad Marg, New Delhi, India </Td> </Tr> <Tr> <Th_colspan="2"> Website </Th> </Tr> <Tr> <Td_colspan="2"> rajyasabha.nic.in </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Rajya Sabha Council of States </Th> </Tr>

Who is the president officer of the rajya sabha
find me the text answering this question