CREATE TABLE table_5126 ("Race" CLOB, "Length" CLOB, "Class" CLOB, "Circuit" CLOB, "Date" CLOB)

What is the date of the Mosport Park circuit?
SELECT "Date" FROM table_5126 WHERE "Circuit" = 'mosport park'
SELECT "Date" FROM "table_5126" WHERE "Circuit" = 'mosport park'