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_47661 ( "Year" text, "Track" text, "125 cc" text, "250 cc" text, "Report" text )

### Question ###
What is the name of the track that hosted the Swedish Grand Prix in 1979?

### Accurate SQL ###

SELECT "Track" FROM table_47661 WHERE "Year" = '1979'