user: Question: What is the minimum 1930 when 1990 is 6883 and 1920 is more than 6215?
Columns: ['1910', '1920', '1930', '1940', '1950', '1960', '1970', '1980', '1990', '2000']
Types: ['real', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: [92228531.0, 106021568.0, 123202660.0, 132165129.0, 150844547.0, 179325671.0, 203210158.0, 226545805.0, 248709873.0, 281421906.0]
SQL:

assistant: SELECT MIN("1930") FROM "Table" WHERE "1990" = 6883.0 AND "1920" > 6215.0;