Question:
Which position did Mark Clinton hold in Sep, 1970?

Context:
 Mark Clinton holds the position of Minister for Agriculture, Food and the Marine from Mar, 1973 to Jul, 1977. 
 Mark Clinton holds the position of Representative of the Parliamentary Assembly of the Council of Europe from Sep, 1969 to Jan, 1971. 
 Mark Clinton holds the position of Substitute member of the Parliamentary Assembly of the Council of Europe from Jan, 1968 to Sep, 1969. 
 Mark Clinton holds the position of member of the European Parliament from Jul, 1979 to Jul, 1984. 
 Mark Clinton holds the position of Teachta Dála from Oct, 1961 to Mar, 1965.

Answer:
Representative of the Parliamentary Assembly of the Council of Europe