who is starring in south africa movies produced by gary wheeler ?
select distinct var_uri where brack_open var_film rdf_type dbo_Film sep_dot var_film dbo_country dbr_South_Africa sep_dot var_film dbo_producer dbr_Gary_Wheeler_ attr_open filmmaker attr_close sep_dot var_film dbo_starring var_uri sep_dot var_uri rdf_type dbo_Person sep_dot brack_close