Question:
Which position did Harold Roper hold in Apr, 1958?

Context:
 Harold Roper holds the position of Member of the 41st Parliament of the United Kingdom from May, 1955 to Sep, 1959. 
 Harold Roper holds the position of Member of the 40th Parliament of the United Kingdom from Oct, 1951 to May, 1955. 
 Harold Roper holds the position of Member of the 39th Parliament of the United Kingdom from Feb, 1950 to Oct, 1951.

Answer:
Member of the 41st Parliament of the United Kingdom