CREATE TABLE table_21473 ("Game" FLOAT, "Date" TEXT, "Team" TEXT, "Score" TEXT, "High points" TEXT, "High rebounds" TEXT, "High assists" TEXT, "Location Attendance" TEXT, "Record" TEXT)

Who had the high points while Dirk Nowitzki (13) had the high rebounds?
SELECT "High points" FROM table_21473 WHERE "High rebounds" = 'Dirk Nowitzki (13)'
SELECT "High points" FROM "table_21473" WHERE "High rebounds" = 'Dirk Nowitzki (13)'