Table: touring_car_championships
Columns: rd
circuit
city_state
date
format
round_winner
car
entrant

Question: Who is the round winner when entrant is craven mild racing?
SQL: SELECT "round_winner" FROM touring_car_championships WHERE "entrant" = 'Craven Mild Racing'

Question: Who is the round winner of the wanneroo park circuit?
SQL: SELECT "round_winner" FROM touring_car_championships WHERE "circuit" = 'Wanneroo Park'

Question: Which circuit has two heats as the format?
SQL: SELECT "circuit" FROM touring_car_championships WHERE "format" = 'Two heats'