Question:
Who was the head of Canada in Feb, 2015?

Context:
 Justin Trudeau is the head of the government of Canada from Nov, 2015 to Dec, 2022. 
 Stephen Harper is the head of the government of Canada from Feb, 2006 to Nov, 2015. 
 John A. Macdonald is the head of the government of Canada from Jul, 1867 to Nov, 1873. 
 William Lyon Mackenzie King is the head of the government of Canada from Oct, 1935 to Nov, 1948. 
 Alexander Mackenzie is the head of the government of Canada from Nov, 1873 to Oct, 1878.

Answer:
Stephen Harper