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:
| Date | Tournament | Winning score | Margin of victory | Runner(s)-up |
| --- | --- | --- | --- | --- |
| Jul 14, 1986 | U.S. Women's Open | –1 (74-74-70-69=287) | Playoff | Sally Little |
| Jul 20, 1986 | Boston Five Classic | –7 (71-70-72-68=281) | 1 stroke | Deb Richard |
| Mar 1, 1987 | Women's Kemper Open | –12 (67-70-69-70=276) | Playoff | Cathy Gerring |
| Mar 8, 1987 | GNA/Glendale Federal Classic | –2 (74-74-71-67=286) | Playoff | Robin Walton |
| May 24, 1987 | Mazda LPGA Championship | –13 (72-68-68-67=275) | 1 stroke | Betsy King |
| Jul 5, 1987 | Jamie Farr Toledo Classic | –8 (71-73-69-67=280) | 2 strokes | Jill Briles-Hinton , Nancy Taylor |
| Jul 19, 1987 | Boston Five Classic | –11 (73-70-67-67=277) | 1 stroke | Jody Rosenthal , Donna White |
| Jan 20, 1991 | The Jamaica Classic | –6 (71-72-64=207) | 3 strokes | Patty Sheehan |
| Jun 9, 1991 | Atlantic City Classic | –8 (71-68-69=208) | 1 stroke | Amy Alcott , Cindy Schreyer |
| Jun 6, 1993 | Oldsmobile Classic | –11 (72-68-68-69=277) | 1 stroke | Tammie Green , Trish Johnson , Alice Ritzman |
| Aug 21, 1994 | Chicago Challenge | –16 (68-69-68-67=272) | 3 strokes | Dale Eggeling , Robin Walton |
Question:
What is the margin of victory of the gna/glendale federal classic?
Answer:
Playoff