Table:
text: 1978 Australian Touring Car Championship
Calendar
Calendar
Rd_ Circuit City_State Date_ Format Round_winner Car Entrant
1 Symmons Plains Launceston , Tasmania 5 March One race Peter Brock Holden LX Torana A9X Marlboro Holden Dealer Team
2 Oran Park Sydney , New South Wales 26 March One race Peter Brock Holden LX Torana A9X Marlboro Holden Dealer Team
3 Amaroo Park Sydney , New South Wales 9 April One race Allan Grice Holden LX Torana A9X Craven Mild Racing
4 Sandown Melbourne , Victoria 16 April One race Ian Geoghegan Holden LX Torana A9X Bob Jane T-Marts

Question: Who is the 1978 Australian Touring Car Championship winner if the competitor is racing mildly?