( ( ( A liquid ) ( ( ( becomes ( a gas ) ) ( if ( ( its temperature ) ( is increased ) ) ) ) . ) ) ( ( A liquid ) ( ( ( becomes ( a solid ) ) ( if ( ( its temperature ) decreases ) ) ) . ) ) )
(ROOT (S (S (NP (DT A) (NN liquid)) (VP (VBZ becomes) (NP (DT a) (NN gas)) (SBAR (IN if) (S (NP (PRP$ its) (NN temperature)) (VP (VBZ is) (VP (VBN increased)))))) (. .)) (NP (DT A) (NN liquid)) (VP (VBZ becomes) (NP (DT a) (JJ solid)) (SBAR (IN if) (S (NP (PRP$ its) (NN temperature)) (VP (VBZ decreases))))) (. .)))
A liquid becomes a gas if its temperature is increased. A liquid becomes a solid if its temperature decreases.
(ROOT (S (NP (NP (CD One) (NN way)) (SBAR (S (VP (TO to) (VP (VB change) (NP (NN water)) (PP (IN from) (NP (NP (DT a) (NN liquid)) (PP (TO to) (NP (DT a) (JJ solid)))))))))) (VP (VBZ is) (S (VP (TO to) (VP (VB decrease) (NP (DT the) (NN temperature)))))) (. .)))