Simplify the following text for a Grade 12 native English-speaking person.
Original: David Francis , the President of the Louisiana Purchase Exposition , declined to invite anybody else to open the Games and , on July 1 did so himself in a scaled-down short and humdrum `` ceremony '' .
Simplified: David Francis , the President of the Louisiana Purchase Exposition , did not invite anybody else to open the games and , on July 1 , 1904 , did so himself in a small , short ` ceremony ' .