Simplify the following text for a Grade 7 native English-speaking person.
Original: Marie-S Ã golÃ ne Royal ( born September 22 , 1953 in Dakar , Senegal ) is a French politician .
Simplified: Marie-S Ã golÃ ne Royal ( ; born 22 September 1953 ) , known as SÃ golÃ ne Royal , is a French politician .