which training center of antje von graevenitz has also alumni named khandaker mosharraf hossain ?
SELECT DISTINCT var_uri where brack_open dbr_Antje_von_Graevenitz dbp_training var_uri sep_dot dbr_Khandaker_Mosharraf_Hossain_ attr_open BNP attr_close dbp_education var_uri brack_close