( Clouds ( ( ( ( form ( in ( the ( free atmosphere ) ) ) ) primarily ) ( as ( ( ( a result ) ( of ( ( condensation or ) deposition ) ) ) ( of ( ( water vapor ) ( in ( ascending air ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Clouds)) (VP (VBP form) (PP (IN in) (NP (DT the) (JJ free) (NN atmosphere))) (ADVP (RB primarily)) (PP (IN as) (NP (NP (DT a) (NN result)) (PP (IN of) (NP (NN condensation) (CC or) (NN deposition))) (PP (IN of) (NP (NP (NN water) (NN vapor)) (PP (IN in) (S (VP (VBG ascending) (NP (NN air)))))))))) (. .)))
Clouds form in the free atmosphere primarily as a result of condensation or deposition of water vapor in ascending air.
(ROOT (S (VP (VB Clouds) (NP (NP (NN form)) (PRN (-LRB- -LRB-) (PRP s) (-RRB- -RRB-)) (SBAR (WHADVP (WRB when)) (S (NP (NN water) (NN vapor)) (VP (VBZ condenses) (PP (IN in) (NP (NP (DT the) (NN air)) (PP (IN around) (NP (NP (NNS specs)) (PP (IN of) (NP (NN matter)))))))))))) (. .)))