The definition in the Third Unabridged was a model of clarity compared with that.
( ( ( The definition ) ( in ( the ( Third Unabridged ) ) ) ) ( ( was ( ( a model ) ( of ( clarity ( compared ( with that ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN definition)) (PP (IN in) (NP (DT the) (NNP Third) (NNP Unabridged)))) (VP (VBD was) (NP (NP (DT a) (NN model)) (PP (IN of) (NP (NP (NN clarity)) (PP (VBN compared) (PP (IN with) (NP (DT that)))))))) (. .)))
The new definition is very hard to understand.
( ( The ( new definition ) ) ( ( ( is ( very hard ) ) ( to understand ) ) . ) )
(ROOT (S (NP (DT The) (JJ new) (NN definition)) (VP (VBZ is) (ADJP (RB very) (JJ hard)) (S (VP (TO to) (VP (VB understand))))) (. .)))