... a light , yet engrossing piece . 
(ROOT (FRAG (, ...) (NP (DT a) (ADJP (JJ light) (, ,) (CC yet) (JJ engrossing)) (NN piece)) (. .)))
(ROOT (FRAG (, ) (NP (DT ) (ADJP (JJ ) (, ) (CC ) (JJ )) (NN )) (. )))