Give you a statement and table with its title in Markdown format, please determine whether the statement is supported or refuted by, or is unrelated to the table. It'a binary classification problem, you should choose the answer between supported and refuted. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| circuit | city / state | date | winner | team |
| mallala motor sport park | mallala , south australia | 7 may | mark mclaughlin | elfin sports cars |
| mallala motor sport park | mallala , south australia | 7 may | rohan onslow | rjmacarthur onslow |
| winton motor raceway | benalla , victoria | 4 june | rohan onslow | rjmacarthur onslow |
| winton motor raceway | benalla , victoria | 4 june | john briggs | john briggs |
| oran park raceway | sydney , new south wales | 4 august | rohan onslow | rjmacarthur onslow |
| oran park raceway | sydney , new south wales | 4 august | rohan onslow | rjmacarthur onslow |
| amaroo park | sydney , new south wales | 20 august | neil crompton | boylan racing |
| amaroo park | sydney , new south wales | 20 august | simon kane | clive kane photography |
| sandown international raceway | melbourne , victoria | 9 october | sam astuti | cascone corporation |
| sandown international raceway | melbourne , victoria | 9 october | neil crompton | boylan racing |
Title:
1989 australian drivers' championship
Statement:
out of the 10 listed races , rohan onslow won exactly half of them
Answer:
refuted