( Evaporation ( ( ( changes ( ( ( liquid and ) frozen ) water ) ) ( into ( ( ( water-vapor gas ) , ) ( which ( then ( ( ( floats up ) ( into ( the skies ) ) ) ( to ( become clouds ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Evaporation)) (VP (VBZ changes) (NP (ADJP (JJ liquid) (CC and) (JJ frozen)) (NN water)) (PP (IN into) (NP (NP (JJ water-vapor) (NN gas)) (, ,) (SBAR (WHNP (WDT which)) (S (ADVP (RB then)) (VP (VBZ floats) (PRT (RP up)) (PP (IN into) (NP (DT the) (NNS skies))) (S (VP (TO to) (VP (VB become) (NP (NNS clouds))))))))))) (. .)))
Evaporation changes liquid and frozen water into water-vapor gas, which then floats up into the skies to become clouds.
(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.