( ( ( ( ( When ( water ( changes ( from ( a ( ( liquid ( to ( ( ( a vapor ) , ) ( ( a process ) called ) ) ) ) evaporation ) ) ) ) ) ) ( , ( it ( requires ( ( a ( good deal ) ) ( of energy ) ) ) ) ) ) and ) ( ( this energy ) ( comes ( from ( ( the body ) ( of ( liquid water ) ) ) ) ) ) ) . )
(ROOT (S (S (SBAR (WHADVP (WRB When)) (S (NP (NN water)) (VP (VBZ changes) (PP (IN from) (NP (DT a) (ADJP (JJ liquid) (PP (TO to) (NP (NP (DT a) (NN vapor)) (, ,) (NP (NP (DT a) (NN process)) (VP (VBN called)))))) (NN evaporation)))))) (, ,) (NP (PRP it)) (VP (VBZ requires) (NP (NP (DT a) (JJ good) (NN deal)) (PP (IN of) (NP (NN energy)))))) (CC and) (S (NP (DT this) (NN energy)) (VP (VBZ comes) (PP (IN from) (NP (NP (DT the) (NN body)) (PP (IN of) (NP (JJ liquid) (NN water))))))) (. .)))
When water changes from a liquid to a vapor, a process called evaporation, it requires a good deal of energy and this energy comes from the body of liquid water.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (JJ liquid) (NN water) (NNS changes)) (VP (TO to) (VP (VB water) (NP (NN vapor)))))) (NP (PRP it)) (VP (VBZ is) (VP (VBN called) (NP (NN evaporation)))) (. .)))
When liquid water changes to water vapor it is called evaporation.