Simplify the following text for a Grade 14 native English-speaking person.
Original: The organization began to plan for its own sports activities , informing the Chicago Organizing Committee for the Olympic Games that the Exposition would try to make the Olympic Games less important than the Exposition games unless the Olympic Games were moved to St. Louis .
Simplified: The exposition organization began to plan for its own sports activities , informing the Chicago OCOG that its own international sports events intended to eclipse the Olympic Games unless they were moved to St. Louis .