Complex sentence: The 1949 FIVB Volleyball Men's World Championship was the first edition of the tournament held by the world's governing body, the "Fédération Internationale de Volleyball" (FIVB), in Prague, Czechoslovakia from 10 to 18 September 1949.
Split into simpler sentences: The 1949 FIVB Volleyball Men's World Championship was the first edition of the tournament, organised by the world's governing body, the FIVB. It was held in Prague, Czechoslovakia from 10 to 18 September 1949.