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_28803803_1 ( irst VARCHAR, original_channel VARCHAR )

### Question ###
How many IRST figures for the show that premiered on Canale 5 (2006)?

### Accurate SQL ###

SELECT COUNT(irst) FROM table_28803803_1 WHERE original_channel = "Canale 5 (2006)"