( ( a. Evaporation ) ( ( ( changes ( liquid water ) ) ( to ( water vapor ) ) ) . ) )
(ROOT (S (NP (NNP a.) (NNP Evaporation)) (VP (VBZ changes) (NP (JJ liquid) (NN water)) (PP (TO to) (NP (NN water) (NN vapor)))) (. .)))
a. Evaporation changes liquid water to water vapor.
(ROOT (S (NP (NNP Evaporation)) (VP (VBZ is) (ADJP (JJ responsible) (PP (IN for) (S (VP (VBG changing) (NP (JJ liquid) (NN water)) (PP (IN into) (NP (NN water) (NN vapor)))))))) (. .)))