( ( ( ( Decrease liquid ) temperature ) ( if possible ) ) . )
(ROOT (NP (NP (ADJP (JJ Decrease) (JJ liquid)) (NN temperature)) (ADJP (IN if) (JJ possible)) (. .)))
Decrease liquid temperature if possible.
(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)))))) (. .)))