216936
From its foundation , general election manifestos were issued for the Labour Party as a whole , whereas the manifestos of the Conservative and Liberal Parties generally took the form of a form of a short personal address by the leader of the party until the 1950s .
 Labour, Conservative, Liberal
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Labour, Conservative, Liberal