Complex sentence: This was the second time a head of state had not personally officiated at an Olympic opening ceremony the first being at the games of 1904 in St. Louis, Missouri, in the USA by David R. Fracis the mayor of the city at the time.
Split into simpler sentences: This was the second time a head of state had not personally officiated at an Olympic opening ceremony. The first at the games of 1904 in St. Louis, Missouri in the USA by David R. Fracis the mayor of the city at the time.