Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_83 (national_final_main_host VARCHAR, semi_final_heat_host VARCHAR, year_s_ VARCHAR)

### Question ###
What is the name of the national final main host when the semi final/heat host shows internal selection in 2011?

### Accurate SQL ###

SELECT national_final_main_host FROM table_name_83 WHERE semi_final_heat_host = "internal selection" AND year_s_ = "2011"