pinheads who talk throughout the show . 
(ROOT (NP (NP (NNS pinheads)) (SBAR (WHNP (WP who)) (S (VP (VBP talk) (PP (IN throughout) (NP (DT the) (NN show)))))) (. .)))
(ROOT (NP (NP (NNS )) (SBAR (WHNP (WP )) (S (VP (VBP ) (PP (IN ) (NP (DT ) (NN )))))) (. )))