Table schema:
CREATE TABLE table_name_89 (visitor VARCHAR, date VARCHAR, home VARCHAR, round VARCHAR)

Question: 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"