who was the head coach of 2015–16 1 . fsv mainz 05 season and also the coach of 1 . fsv mainz 05 ?
SELECT DISTINCT var_uri where brack_open dbr_2015–16_1._FSV_Mainz_05_season dbo_manager var_uri sep_dot dbr_1._FSV_Mainz_05 dbp_coach var_uri brack_close