user: Question: What is the highest value for 2000, when the value for 1950 is 3.5, and when the value for 1970 is greater than 3.4?
Columns: ['Region', '1950', '1960', '1970', '1980', '1990', '2000']
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: ['West Asia (15 economies)', 2.0, 2.3, 3.0, 3.8, 3.4, 3.7]
SQL:

assistant: SELECT MAX("2000") FROM "Table" WHERE "1950" = 3.5 AND "1970" > 3.4;