an engrossing story about a horrifying historical event and 
(ROOT (NP (NP (DT an) (JJ engrossing) (NN story)) (PP (IN about) (NP (DT a) (JJ horrifying) (JJ historical) (NN event))) (CC and)))
(ROOT (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (DT ) (JJ ) (JJ ) (NN ))) (CC )))