user: Question: What is the total number of # Of Prefectural Votes, when # Of Seats Won is greater than 69, and when Leader is yasuhiro nakasone?
Columns: ['Election', 'Leader', '# of seats won', '# of National votes', '% of National vote', '# of Prefectural votes', '% of Prefectural vote']
Types: ['real', 'text', 'real', 'real', 'text', 'real', 'text']
Sample row: [1956.0, 'Ichirō Hatoyama', 61.0, 11356874.0, '39.7%', 14353960.0, '48.4%']
SQL:

assistant: SELECT SUM("# of Prefectural votes") FROM "Table" WHERE "# of seats won" > 69.0 AND "Leader" = 'yasuhiro nakasone';