Question:
Which position did William Ross Macdonald hold in Dec, 1949?

Context:
 William Ross Macdonald holds the position of member of the House of Commons of Canada from Jan, 1935 to Jan, 1949. 
 William Ross Macdonald holds the position of Representative of the Government in the Senate from Oct, 1953 to Jun, 1957. 
 William Ross Macdonald holds the position of Solicitor General of Canada from Jan, 1954 to Jun, 1957. 
 William Ross Macdonald holds the position of Speaker of the House of Commons from Sep, 1949 to Jun, 1953. 
 William Ross Macdonald holds the position of member of the Senate of Canada from Jun, 1953 to Dec, 1967. 
 William Ross Macdonald holds the position of Leader of the Opposition in the Senate from Jan, 1957 to Jan, 1963. 
 William Ross Macdonald holds the position of Lieutenant Governor of Ontario from Jul, 1968 to Apr, 1974.

Answer:
Question:
Which position did William Ross Macdonald hold in Dec, 1949?

Context:
 William Ross Macdonald holds the position of member of the House of Commons of Canada from Jan, 1935 to Jan, 1949. 
 William Ross Macdonald holds the position of Representative of the Government in the Senate from Oct, 1953 to Jun, 1957. 
 William Ross Macdonald holds the position of Solicitor General of Canada from Jan, 1954 to Jun, 1957. 
 William Ross Macdonald holds the position of Speaker of the House of Commons from Sep, 1949 to Jun, 1953. 
 William Ross Macdonald holds the position of member of the Senate of Canada from Jun, 1953 to Dec, 1967. 
 William Ross Macdonald holds the position of Leader of the Opposition in the Senate from Jan, 1957 to Jan, 1963. 
 William Ross Macdonald holds the position of Lieutenant Governor of Ontario from Jul, 1968 to Apr, 1974.

Answer:
user
Speaker of the House of Commons
assistant
Question:
Which position did William Ross Macdonald hold in Dec, 1949?

Context:
 William Ross Macdonald holds the position of member of the House of Commons of Canada from Jan, 1935 to Jan, 1949. 
 William Ross Macdonald holds the position of Representative of the Government in the Senate from Oct, 1953 to Jun, 1957. 
 William Ross Macdonald holds the position of Solicitor General of Canada from Jan, 1954 to Jun, 1957. 
 William Ross Macdonald holds the position of Speaker of the House of Commons from Sep, 1949 to Jun, 1953. 
 William Ross Macdonald holds the position of member of the Senate of Canada from Jun, 1953 to Dec, 1967. 
 William Ross Macdonald holds the position of Leader of the Opposition in the Senate from Jan, 1957 to Jan, 1963. 
 William Ross Macdonald holds the position of Lieutenant Governor of Ontario from Jul, 1968 to Apr, 1974.

Answer:
user
member of the House of Commons of Canada
Solicitor General of Canada
Representative of the Government in the Senate
Lieutenant Governor of Ontario
Leader of the Opposition in the Senate
member of the Senate of Canada
assistant
Question:
Which position did William Ross Macdonald hold in Dec, 1949?

Context:
 William Ross Macdonald holds the position of member of the House of Commons of Canada from Jan, 1935 to Jan, 1949. 
 William Ross Macdonald holds the position of Representative of the Government in the Senate from Oct, 1953 to Jun, 1957. 
 William Ross Macdonald holds the position of Solicitor General of Canada from Jan, 1954 to Jun, 1957. 
 William Ross Macdonald holds the position of Speaker of the House of Commons from Sep, 1949 to Jun, 1953. 
 William Ross Macdonald holds the position of member of the Senate of Canada from Jun, 1953 to Dec, 1967. 
 William Ross Macdonald holds the position of Leader of the Opposition in the Senate from Jan, 1957 to Jan, 1963. 
 William Ross Macdonald holds the position of Lieutenant Governor of Ontario from Jul, 1968 to Apr, 1974.

Answer:
user
Speaker of the House of Commons
assistant