CREATE TABLE table_name_66 (population INTEGER, place VARCHAR(255), code VARCHAR(255), area__km_2__ VARCHAR(255))
What is the Population of Tshepiso with a Code of 70409 or smaller and an Area (km 2) smaller than 5.97?
    
SQL: SELECT MIN(population) FROM table_name_66 WHERE code < 70409 AND area__km_2__ < 5.97 AND place = "tshepiso"