Simplify the following text for a Grade 9 native English-speaking person.
Original: A press conference was held on February 1 , 2010 at the Georgia Dome to officially announced the event for Atlanta ; this will be the first WrestleMania to be held in the state of Georgia .
Simplified: A press conference was held on February 1 , 2010 at the Georgia Dome to formally announce the event for Atlanta .