Question:
Which position did Harry Pursey hold in Sep, 1951?

Context:
 Harry Pursey holds the position of Member of the 42nd Parliament of the United Kingdom from Oct, 1959 to Sep, 1964. 
 Harry Pursey holds the position of Member of the 43rd Parliament of the United Kingdom from Oct, 1964 to Mar, 1966. 
 Harry Pursey holds the position of Member of the 38th Parliament of the United Kingdom from Jul, 1945 to Feb, 1950. 
 Harry Pursey holds the position of Member of the 41st Parliament of the United Kingdom from May, 1955 to Sep, 1959. 
 Harry Pursey holds the position of Member of the 39th Parliament of the United Kingdom from Feb, 1950 to Oct, 1951. 
 Harry Pursey holds the position of Member of the 40th Parliament of the United Kingdom from Oct, 1951 to May, 1955. 
 Harry Pursey holds the position of Member of the 44th Parliament of the United Kingdom from Mar, 1966 to May, 1970.

Answer:
Member of the 39th Parliament of the United Kingdom