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The Virgilio Barco Vargas ( 1986 – 1990 ) administration , in addition to continuing to handle the difficulties of the complex negotiations with the guerrillas , also inherited a particularly chaotic confrontation against the drug lords , who were engaged in a campaign of terrorism and murder in response to government moves in favor of their extradition overseas .
 person: Virgilio Barco Vargas
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Virgilio Barco Vargas