Instruct: Who won men's singles when petya nedelcheva won women's singles, petya nedelcheva diana dimova won women's doubles, stilian makarski diana dimova won mixed doubles, and stilian makarski peyo boichinov won men's doubles?
Output: SELECT Men's singles FROM table WHERE Women's singles = petya nedelcheva AND Women's doubles = petya nedelcheva diana dimova AND Mixed doubles = stilian makarski diana dimova AND Men's doubles = stilian makarski peyo boichinov