user: Question: When the president was Yoweri Museveni, and the year was 1993, with rank of 6 under political rights, what was the total of civil liberties?
Columns: ['Year', 'Political Rights', 'Civil Liberties', 'Status', 'President']
Types: ['real', 'real', 'real', 'text', 'text']
Sample row: [1972.0, 7.0, 7.0, 'Not Free', 'Idi Amin']
SQL:

assistant: SELECT SUM("Civil Liberties") FROM "Table" WHERE "Political Rights" = 6.0 AND "President" = 'Yoweri Museveni' AND "Year" = 1993.0;