CREATE TABLE table_name_89 (visitor VARCHAR(255), date VARCHAR(255), home VARCHAR(255), round VARCHAR(255))
Who is the visitor team on Saturday, November 22 when linköpings hc was the home team and there were more than 20 rounds?
    
SQL: SELECT visitor FROM table_name_89 WHERE home = "linköpings hc" AND round > 20 AND date = "saturday, november 22"