8557
In late 2007 Colombian President Uribe through his appointed negotiator  Piedad  contacted Venezuelan President Hugo to facilitate the humanitarian exchange negotiations of prisoners for hostages between the government of  Colombia  and the Revolutionary Armed Forces of Colombia .
 employee of: Piedad, Colombia
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
 Entity Pairs:  Piedad, Colombia 
Answer:
 employee of: Piedad, Colombia