CREATE TABLE table_name_83 (national_final_main_host VARCHAR2, semi_final_heat_host VARCHAR2, year_s_ VARCHAR2)

What is the name of the national final main host when the semi final/heat host shows internal selection in 2011?
SELECT national_final_main_host FROM table_name_83 WHERE semi_final_heat_host = "internal selection" AND year_s_ = "2011"
SELECT "national_final_main_host" FROM "table_name_83" WHERE "2011" = "year_s_" AND "internal selection" = "semi_final_heat_host"