Simplify the following text for a Grade 7 native English-speaking person.
Original: She finally lost her crown in 1978 to another Georgian , 17-year-old Maia Chiburdanidze , by a score of 6 Â 1\/2 â `` 8 Â 1\/2 ( +2 â ' 4 = 9 ) .
Simplified: She finally lost her crown in 1978 to another Georgian , Maia Chiburdanidze , by a score of 6 Â 1\/2 â `` 8 Â 1\/2 ( +2 â ' 4 = 9 ) .