who composed the episode after which came the world set free ?
SELECT DISTINCT var_uri where brack_open var_x dbo_subsequentWork dbr_The_World_Set_Free_ attr_open Cosmos:_A_Spacetime_Odyssey attr_close sep_dot var_x dbo_musicComposer var_uri sep_dot var_x a dbo_TelevisionEpisode brack_close