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Its cause was mainly mounting tensions between the two leading political parties , which subsequently ignited after the assassination of the Liberal presidential candidate Jorge Eliécer Gaitán on 9 April 1948 .
 Jorge Eliécer Gaitán
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Jorge Eliécer Gaitán