( ( ( ( ( It ( ( remains ( ( liquid down ) ( to ( absolute zero ) ) ) ) ( at ( ordinary pressures ) ) ) ) , ) but ) ( it ( ( can readily ) ( solidify ( by ( increasing ( the pressure ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (PRP It)) (VP (VBZ remains) (ADJP (ADJP (JJ liquid) (IN down)) (PP (TO to) (NP (JJ absolute) (CD zero)))) (PP (IN at) (NP (JJ ordinary) (NNS pressures))))) (, ,) (CC but) (S (NP (PRP it)) (VP (MD can) (ADVP (RB readily)) (VP (VB solidify) (PP (IN by) (S (VP (VBG increasing) (NP (DT the) (NN pressure)))))))) (. .)))
It remains liquid down to absolute zero at ordinary pressures, but it can readily solidify by increasing the pressure.
(ROOT (S (S (VP (ADVP (RB Continually)) (VBG increasing) (NP (NP (DT the) (NN pressure)) (PP (IN on) (NP (DT the) (NN liquid)))))) (VP (MD will) (ADVP (RB eventually)) (VP (VB cause) (NP (DT the) (NN substance) (S (VP (TO to) (VP (VB solidify))))))) (. .)))