CREATE TABLE "table1_13642023_2" (
  "rnd" real,
  "circuit" text,
  "gto_winning_team" text,
  "gtu_winning_team" text,
  "to_winning_team" text,
  "tu_winning_team" text,
  "results" text
);

Question: Who was the TO winning team when the TU winning team was Joe Richardson? 
SQL: SELECT "to_winning_team" FROM "table1_13642023_2" WHERE "tu_winning_team"='Joe Richardson';

Question: On what circuit was the GTU winning team #59 Brumos Porsche - Audi in round 5? 
SQL: SELECT "circuit" FROM "table1_13642023_2" WHERE "rnd"=5 AND "gtu_winning_team"='#59 Brumos Porsche - Audi';

Question: Who was the GTU winning team when the TO winning team was #3 Camaro? 
SQL: SELECT "gtu_winning_team" FROM "table1_13642023_2" WHERE "to_winning_team"='#3 Camaro';

Question: Who was the GTU winning team when the TO winning team was Steve Ross? 
SQL: SELECT "gtu_winning_team" FROM "table1_13642023_2" WHERE "to_winning_team"='Steve Ross';

Question: Who was the GTO winning team in round 5 when the GTU winning team was #59 Brumos Porsche - Audi? 
SQL: SELECT "gto_winning_team" FROM "table1_13642023_2" WHERE "rnd"=5 AND "gtu_winning_team"='#59 Brumos Porsche - Audi';

Question: Who was the GTO winning team when the TO winning team was #84 Camaro? 
SQL: SELECT "gto_winning_team" FROM "table1_13642023_2" WHERE "to_winning_team"='#84 Camaro';