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_24 (semi_final_heat_host VARCHAR, national_final_main_host VARCHAR, national_final_co_host VARCHAR)

### Question ###
What was the host for the semi final heat, when Terry Wogan was the National Final main host, and Gaby Roslin was the National Final co-host?

### Accurate SQL ###

SELECT semi_final_heat_host FROM table_name_24 WHERE national_final_main_host = "terry wogan" AND national_final_co_host = "gaby roslin"