CREATE TABLE table_13642023_2 (gto_winning_team VARCHAR2, rnd VARCHAR2, gtu_winning_team VARCHAR2)

Who was the GTO winning team in round 5 when the GTU winning team was #59 Brumos Porsche - Audi?
SELECT gto_winning_team FROM table_13642023_2 WHERE rnd = 5 AND gtu_winning_team = "#59 Brumos Porsche - Audi"
SELECT "gto_winning_team" FROM "table_13642023_2" WHERE "#59 Brumos Porsche - Audi" = "gtu_winning_team" AND "rnd" = 5