 Complete the following phrase:  Milanko Petrović ; born 21 September 1988 in Sjenica is a Serbian biathlete who participated at the 2010 Winter Olympics, becoming the first olympic biathlete for independent Serbia. At the 2014 Winter Olympics he carried Serbian flag at the opening ceremony and competed in biathlon and cross-country skiing. He represents Serbia at the Biathlon World Championships and he is a regular participant of the Biathlon World Cup and the first ever Serb to win World Cup points. Occasionally, he competes in cross-country skiing. At the 