an engrossing and infectiously enthusiastic documentary . 
(ROOT (NP (DT an) (ADJP (ADJP (JJ engrossing)) (CC and) (ADJP (RB infectiously) (JJ enthusiastic))) (NN documentary) (. .)))
(ROOT (NP (DT ) (ADJP (ADJP (JJ )) (CC ) (ADJP (RB ) (JJ ))) (NN ) (. )))