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:
| tournament | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 |
| grand slam tournaments | grand slam tournaments | grand slam tournaments | grand slam tournaments | grand slam tournaments | grand slam tournaments | grand slam tournaments | grand slam tournaments | grand slam tournaments | grand slam tournaments | grand slam tournaments | grand slam tournaments |
| australian open | a | 1r | 2r | 1r | a | 3r | lq | lq | lq | a | 1r |
| french open | a | 1r | 1r | lq | lq | 1r | lq | lq | a | 1r | lq |
| wimbledon | a | 4r | 3r | 1r | lq | 2r | lq | 1r | 1r | 2r | lq |
| us open | lq | 1r | 1r | 1r | lq | a | 1r | 1r | 3r | 1r | lq |
Title:
katrina adams
Statement:
1987 and 1989 are the only grand slam tournaments
Answer:
refuted