a thriller without a lot of thrills . 
(ROOT (NP (NP (DT a) (NN thriller)) (PP (IN without) (NP (NP (DT a) (NN lot)) (PP (IN of) (NP (NNS thrills))))) (. .)))
(ROOT (NP (NP (DT ) (NN )) (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (NNS ))))) (. )))