( ( Introduction ( to ( rain Rain ) ) ) ( ( is ( ( ( ( liquid water ) ( in ( ( the form ) ( of ( droplets ( that ( have ( ( ( ( condensed ( fromatmospheric ( water vapor ) ) ) and ) ... ) ( then precipitated ) ) ) ) ) ) ) ) ) -- ) ( that ( ( is , ) ( become ( ( heavy enough ) ( to ( fall ( under gravity ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Introduction)) (PP (TO to) (NP (NN rain) (NN Rain)))) (VP (VBZ is) (NP (NP (JJ liquid) (NN water)) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NP (NNS droplets)) (SBAR (WHNP (WDT that)) (S (VP (VBP have) (VP (VP (VBN condensed) (NP (JJ fromatmospheric) (NN water) (NN vapor))) (CC and) (: ...) (VP (ADVP (RB then)) (VBN precipitated)))))))))) (: --) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (, ,) (FRAG (VP (VB become) (ADJP (JJ heavy) (RB enough) (S (VP (TO to) (VP (VB fall) (PP (IN under) (NP (NN gravity)))))))))))))) (. .)))
Introduction to rain Rain is liquid water in the form of droplets that have condensed fromatmospheric water vapor and... then precipitated—that is, become heavy enough to fall under gravity.
(ROOT (S (NP (NN Rain)) (VP (VBZ is) (NP (NP (DT an) (NN example)) (PP (IN of) (NP (JJ liquid) (NN water))))) (. .)))