who was the chairman of beşiktaş j . k . and also 2016–17 beşiktaş j . k . season ?
SELECT DISTINCT var_uri where brack_open dbr_2016–17_Beşiktaş_J.K._season dbo_chairman var_uri sep_dot dbr_Beşiktaş_J.K sep_dot dbo_chairman var_uri brack_close