of boring talking heads , etc . 
(ROOT (FRAG (PP (IN of) (NP (NP (JJ boring) (NN talking) (NNS heads)) (, ,) (NP (FW etc)))) (. .)))
(ROOT (FRAG (PP (IN ) (NP (NP (JJ ) (NN ) (NNS )) (, ) (NP (FW )))) (. )))