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:
| year | entrant | chassis | engine | points |
| 1971 | clarke - mordaunt - guthrie racing | march 711 | cosworth v8 | 0 |
| 1971 | stp march | march 711 | cosworth v8 | 0 |
| 1972 | clarke - mordaunt - guthrie racing | march 721 g | cosworth v8 | 0 |
| 1973 | clarke - mordaunt - guthrie - durlacher | march 721 g | cosworth v8 | 0 |
| 1973 | clarke - mordaunt - guthrie - durlacher | march 721 g / 731 | cosworth v8 | 0 |
Title:
mike beuttler
Statement:
march 721 g was the chassis that was featured in 1971
Answer:
refuted