rtokens: Three African leaders -- from Niger , Guinea and Ghana -- are expected to attend the celebrations marking September 1 , 1969 when a group of young army officers , led by a 27-year-old Gaddafi , deposed King Mohammed Idris .
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tokens: Huge stadium lights are directed at the city 's Green Square where makeshift stages await Sunday 's festivities .
ltokens: " We have chosen the challenge because it is our only option , " proclaimed one banner on the road to Tripoli airport which serves only internal flights because of the sanctions .