of clams left in the broiling sun for a good three days 
(ROOT (PP (IN of) (NP (NP (NNS clams)) (VP (VBN left) (PP (IN in) (NP (DT the) (VBG broiling) (NN sun))) (PP (IN for) (NP (DT a) (JJ good) (CD three) (NNS days)))))))
(ROOT (PP (IN ) (NP (NP (NNS )) (VP (VBN ) (PP (IN ) (NP (DT ) (VBG ) (NN ))) (PP (IN ) (NP (DT ) (JJ ) (CD ) (NNS )))))))