Schema: CREATE TABLE table_name_94 (puerto_villarroel_municipality___percentage_ INTEGER, ethnic_group VARCHAR, totora_municipality___percentage_ VARCHAR)
Question: Which Puerto Villarroel Municipality (%) is the lowest one that has an Ethnic group of not indigenous, and a Totora Municipality (%) smaller than 4.4?
SQL: SELECT MIN(puerto_villarroel_municipality___percentage_) FROM table_name_94 WHERE ethnic_group = "not indigenous" AND totora_municipality___percentage_ < 4.4