CREATE TABLE table_65490 ("Year" FLOAT, "Venue" TEXT, "Men's Open" TEXT, "Women's Open" TEXT, "Men's 35s" TEXT)

What is the Men's Open when the venue is Perth?
SELECT "Men's Open" FROM table_65490 WHERE "Venue" = 'perth'
SELECT "Men's Open" FROM "table_65490" WHERE "Venue" = 'perth'