( Freezing ( ( involves ( ( ( changing ( water ( from ( its ( liquid state ) ) ) ) ) ( to ( ( its ( solid state ) ) ( -LRB- ( ice -RRB- ) ) ) ) ) ( by ( ( the removal ) ( of heat ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Freezing)) (VP (VBZ involves) (S (VP (VBG changing) (NP (NP (NN water)) (PP (IN from) (NP (PRP$ its) (JJ liquid) (NN state)))) (PP (TO to) (NP (NP (PRP$ its) (JJ solid) (NN state)) (PRN (-LRB- -LRB-) (NP (NN ice)) (-RRB- -RRB-)))) (PP (IN by) (NP (NP (DT the) (NN removal)) (PP (IN of) (NP (NN heat)))))))) (. .)))
Freezing involves changing water from its liquid state to its solid state (ice) by the removal of heat.
(ROOT (S (NP (NNP Ice)) (VP (VBZ is) (NP (NP (DT the) (JJ common) (NN term)) (PP (IN for) (NP (NP (NN water)) (PP (IN in) (NP (PRP$ its) (JJ solid) (NN state))))))) (. .)))