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 | team | class | laps | pos |
| 1972 | team schnitzer motul | t 3.0 | 70 | dnf |
| 1973 | ford motorwerke | t 3.0 | 4 | dnf |
| 1973 | ford motorwerke | t 3.0 | 239 | dnf |
| 1974 | samson kremer racing | gt | 65 | dnf |
| 1976 | porsche kremer racing | gr5 | 272 | dnf |
| 1977 | gelo racing team | gr5 | 269 | dnf |
| 1979 | gelo racing sportswear intl | gr5 + 2.5 | 201 | dnf |
| 1980 | scuderia lancia corse | gr5 | 6 | dnf |
| 1981 | martini racing | gr5 | 186 | dnf |
| 1982 | martini racing | gr6 | 152 | dnf |
| 1983 | martini racing | c | 121 | dnf |
| 1984 | martini racing | c1 | 275 | dnf |
| 1986 | silk cut jaguar | c1 | 53 | dnf |
Title:
hans heyer
Statement:
class gr5 was achieved in 1972
Answer:
refuted