( ( ( The solubility ) ( of ( gases ( in liquids ) ) ) ) ( ( decreases ( with ( ( an increase ) ( in temperature ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN solubility)) (PP (IN of) (NP (NP (NNS gases)) (PP (IN in) (NP (NNS liquids)))))) (VP (VBZ decreases) (PP (IN with) (NP (NP (DT an) (NN increase)) (PP (IN in) (NP (NN temperature)))))) (. .)))
The solubility of gases in liquids decreases with an increase in temperature.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NP (DT the) (NN solubility)) (PP (IN of) (NP (NP (NNS gases)) (PP (IN in) (NP (NNS liquids)))))) (VP (VBZ changes) (PP (IN with) (NP (VBG increasing) (NN temperature)))))) (, ,) (NP (PRP it)) (VP (VBZ decreases)) (. .)))