user: Question: What is the lowest 1971 number of the Macedonian population with a 2002 value greater than 133 and a 1991 value less than 171?
Columns: ['Macedonian population in Vojvodina', '1961', 'Number 1971', '1981', '1991', '2002']
Types: ['text', 'real', 'real', 'real', 'real', 'real']
Sample row: ['Dužine', 223.0, 143.0, 90.0, 84.0, 68.0]
SQL:

assistant: SELECT MIN("Number 1971") FROM "Table" WHERE "2002" > 133.0 AND "1991" < 171.0;