29820
In the run-off elections on 20 June 2010 the former Minister of defense Juan Manuel Santos won with 69 % of the vote against the second most popular candidate , Antanas Mockus .
 Juan Manuel Santos, Antanas Mockus
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Juan Manuel Santos, Antanas Mockus