for whom did 2008 gulf cup of nations under 23 palyed for which is also had a former student named abdulrahman bin musa'ad ?
SELECT DISTINCT var_uri where brack_open dbr_2008_Gulf_Cup_of_Nations_Under_23 dbp_team var_uri sep_dot dbr_Abdulrahman_bin_Musa'ad dbp_education var_uri brack_close