whose leaders are salman bin hamad bin isa al khalifa and salman bin hamad bin isa al khalifa ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_leader dbr_Salman_bin_Hamad_bin_Isa_Al_Khalifa sep_dot var_uri dbo_leader dbr_Salman_bin_Hamad_bin_Isa_Al_Khalifa brack_close