which famous writer was married to anna grigoryevna snitkina and had a son named lyubov dostoyevskaya ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_spouse dbr_Anna_Grigoryevna_Snitkina sep_dot var_uri dbo_child dbr_Lyubov_Dostoyevskaya sep_dot var_uri a dbo_Writer brack_close