( ( ( 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 (IN If) (S (NP (DT a) (NN solute)) (VP (VBZ is) (NP (DT a) (NN gas))))) (, ,) (S (VP (VBG increasing) (NP (DT the) (NN temperature)))) (VP (MD will) (VP (VB decrease) (NP (PRP$ its) (NN solubility)))) (. .)))