what is the television show whose subsequent work is g . i . joe: a real american hero and developed by ron friedman ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_subsequentWork dbr_G.I._Joe:_A_Real_American_Hero_ attr_open 1989_TV_series attr_close sep_dot var_uri dbo_developer dbr_Ron_Friedman sep_dot var_uri a dbo_TelevisionShow brack_close