83259
The Governor General , on behalf of the monarch , summons and appoints the 105 senators on the advice of the Prime Minister , while the 338 members of the House of Commons - called members of Parliament ( MPs ) - each represent an electoral district , commonly referred to as a " riding " , and are directly elected by Canadian voters .
 House of Commons
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 House of Commons