user: Question: Who won women's singles in 1986?
Columns: ['Year', "Men's singles", "Women's singles", "Men's doubles", "Women's doubles", 'Mixed doubles']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1985.0, 'Jeliazko Valkov', 'Diana Koleva', 'Ilko Orechov Nanko Ertchopov', 'Diana Koleva Zlatka Valkanova', 'Jeliazko Valkov Dobrinka Peneva']
SQL:

assistant: SELECT "Women's singles" FROM "Table" WHERE "Year" = 1986.0;