Complex sentence: The song will be performed by Nika Kocharov and the Young Georgian Lolitaz, who were internally selected in December 2015 by the Georgian broadcaster Georgian Public Broadcaster (GPB) to compete at the 2016 contest in Stockholm, Sweden.
Split into simpler sentences: The song will be performed by Nika Kocharov and the Young Georgian Lolitaz. In December 2015 the Georgian broadcaster Georgian Public Broadcaster (GPB) announced that they had internally selected Nika Kocharov and the Young Georgian Lolitaz to compete at the 2016 contest in Stockholm, Sweden.