<Tr> <Td> 9 </Td> <Td> Abderrahman Khène </Td> <Td> Algeria </Td> <Td> 1 Jan 1973--31 Dec 1974 </Td> </Tr> <Tr> <Td> 10 </Td> <Td> M.O. Feyide </Td> <Td> Nigeria </Td> <Td> 1 Jan 1975--31 Dec 1976 </Td> </Tr> <Tr> <Td> 11 </Td> <Td> Ali M. Jaidah </Td> <Td> Qatar </Td> <Td> 1 Jan 1977--31 Dec 1978 </Td> </Tr> <Tr> <Td> 12 </Td> <Td> René G. Ortiz </Td> <Td> Ecuador </Td> <Td> 1 Jan 1979--30 Jun 1981 </Td> </Tr>

Who is nigeria's present representative at opec