a fine effort , an interesting topic , some intriguing characters and a sad ending . 
(ROOT (NP (NP (DT a) (JJ fine) (NN effort)) (, ,) (NP (DT an) (JJ interesting) (NN topic)) (, ,) (NP (DT some) (JJ intriguing) (NNS characters)) (CC and) (NP (DT a) (JJ sad) (NN ending)) (. .)))
(ROOT (NP (NP (DT ) (JJ ) (NN )) (, ) (NP (DT ) (JJ ) (NN )) (, ) (NP (DT ) (JJ ) (NNS )) (CC ) (NP (DT ) (JJ ) (NN )) (. )))