Complex sentence: Belarus will participate in the Eurovision Song Contest 2013 in Malmö, Sweden, and will select their entry through a combination of "Eurofest", a national final format organised by the Belarusian broadcaster BTRC, and an internal song selection carried out by the winning artist.
Split into simpler sentences: Belarus will participate in the Eurovision Song Contest 2013 in Malmö, Sweden. The Belarusian entry was selected through a combination of "Eurofest", a national final format organised by the Belarusian broadcaster BTRC, and an internal song selection carried out by the winning artist.