CREATE TABLE "table1_13657883_2" (
  "rnd" real,
  "circuit" text,
  "gto_winning_team" text,
  "gtu_winning_team" text,
  "to_winning_team" text,
  "tu_winning_team" text,
  "results" text
);

Question: What was the gtu winning team when the gto winning team was #48 greenwood racing?
SQL: SELECT "gtu_winning_team" FROM "table1_13657883_2" WHERE "gto_winning_team"='#48 Greenwood Racing';

Question: What was the to winnning team when the tu winning team was #16 2002?
SQL: SELECT "to_winning_team" FROM "table1_13657883_2" WHERE "tu_winning_team"='#16 2002';

Question: What round was the gto winning team #48 greenwood racing?
SQL: SELECT "rnd" FROM "table1_13657883_2" WHERE "gto_winning_team"='#48 Greenwood Racing';

Question: What was the to winning team when the tu winning team was joe amato carson baird?
SQL: SELECT "to_winning_team" FROM "table1_13657883_2" WHERE "tu_winning_team"='Joe Amato Carson Baird';