Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Tournament | 1986 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 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 | Grand Slam Tournaments | Grand Slam Tournaments |
| Australian Open | A | 3R | 3R | 3R | A | QF | 3R | 2R | 1R | A | 2R | 1R | 1R |
| French Open | A | QF | QF | 3R | 3R | QF | QF | 1R | QF | QF | 2R | 3R | 1R |
| Wimbledon | A | SF | QF | 3R | QF | 3R | 1R | 2R | 3R | QF | 3R | 3R | 1R |
| US Open | 1R | 2R | 3R | 3R | QF | A | 3R | QF | 3R | 2R | 3R | 2R | 1R |
Question:
What's the 1986 if 1991 has a QF and 1998 has a 3R?
Answer:
A