( Evaporation ( ( is ( ( the process ) ( ( by which ) ( ( ( water molecules ) ( in ( liquid water ) ) ) ( escape ( into ( ( the air ) ( as ( water vapor ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Evaporation)) (VP (VBZ is) (NP (NP (DT the) (NN process)) (SBAR (WHPP (IN by) (WHNP (WDT which))) (S (NP (NP (NN water) (NNS molecules)) (PP (IN in) (NP (JJ liquid) (NN water)))) (VP (VB escape) (PP (IN into) (NP (NP (DT the) (NN air)) (PP (IN as) (NP (NN water) (NN vapor)))))))))) (. .)))
Evaporation is the process by which water molecules in liquid water escape into the air as 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)))))))) (. .)))