Given the task definition and input, reply with output. You are given the conttent of a table in the input (row by row). Generate an unambiguous question based on the information present in the table, such that: 1) It's answer is unique and is in the given table, 2) Its answer is a contiguous text span from the table. Avoid creating questions that can be answered correctly without reading/understanding the table

Table: ['Sr. No.', 'Name', 'From', 'Till', 'Occupation']. ['1.', 'Padamvir Singh', '2009', 'Current', 'IAS']. ['2.', 'Rudhra Gangadharan', '06/04/2006', '02/09/2009', 'IAS']. ['3.', 'D.S. Mathur', '29/10/2004', '06/04/2006', 'IAS']. ['4.', 'Binod Kumar', '20/01/2003', '15/10/2004', 'IAS']. ['5.', 'Wajahat Habibullah', '08/11/2000', '13/01/2003', 'IAS']. ['6.', 'B.S. Baswan', '06/10/1996', '08/11/2000', 'IAS']. ['7.', 'N.C. Saxena', '25/05/1993', '06/10/1996', 'IAS']. ['8.', 'B.N. Yugandhar', '26/05/1988', '25/01/1993', 'IAS']. ['9.', 'R.N. Chopra', '06/06/1985', '29/04/1988', 'IAS']. ['10.', 'K. Ramanujam', '27/02/1984', '24/02/1985', 'IAS']. ['11.', 'R.K. Shastri', '09/11/1982', '27/02/1984', 'IAS']. ['12.', 'I.C. Puri', '16/06/1982', '11/10/1982', 'IAS']. ['13.', 'P.S. Appu', '02/08/1980', '01/03/1982', 'IAS']. ['14.', 'G.C.L. Joneja', '23/07/1977', '30/06/1980', 'IAS']. ['15.', 'B.C. Mathur', '17/05/1977', '23/07/1977', 'IAS']. ['16.', 'Rajeshwar Prasad', '11/05/1973', '11/04/1977', 'IAS']. ['17.', 'D.D. Sathe', '19/03/1969', '11/05/1973', 'ICS']. ['18.', 'K.K. Das', '12/07/1968', '24/02/1969', 'ICS']. ['19.', 'M.G. Pimputkar', '04/09/1965', '29/04/1968', 'ICS']. ['20.', 'S.K. Dutta', '13/08/1963', '02/07/1965', 'ICS']. ['21.', 'A.N. Jha', '01/09/1959', '30/09/1962', 'ICS']

what occupations are ics?