as a painful elegy and sobering cautionary tale 
(ROOT (PP (IN as) (NP (NP (DT a) (JJ painful) (NN elegy)) (CC and) (NP (JJ sobering) (JJ cautionary) (NN tale)))))
(ROOT (PP (IN ) (NP (NP (DT ) (JJ ) (NN )) (CC ) (NP (JJ ) (JJ ) (NN )))))