( ( ( evaporation -- ) ( process ( ( by which ) ( water ( is ( ( changed ( from ( a liquid ) ) ) ( into ( a vapor ) ) ) ) ) ) ) ) . )
(ROOT (NP (NP (NN evaporation)) (: --) (NP (NP (NN process)) (SBAR (WHPP (IN by) (WHNP (WDT which))) (S (NP (NN water)) (VP (VBZ is) (VP (VBN changed) (PP (IN from) (NP (DT a) (NN liquid))) (PP (IN into) (NP (DT a) (NN vapor)))))))) (. .)))
evaporation ---process by which water is changed from a liquid into a vapor.
(ROOT (S (NP (NNP Evaporation)) (VP (VBZ occurs) (SBAR (WHADVP (WRB when)) (S (NP (NP (NN water)) (PP (IN on) (NP (DT the) (NN surface)))) (VP (VBZ changes) (PP (TO to) (NP (NN water) (NN vapor))))))) (. .)))