( It ( ( is ( ( ( ( this substance ) ( that ( causes ( the ( ( JELL-O & ) copy ) ) ) ) ) ; ) ( to ( solidify ( when cooled ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ is) (NP (NP (DT this) (NN substance)) (SBAR (WHNP (WDT that)) (S (VP (VBZ causes) (NP (DT the) (NN JELL-O) (CC &) (NN copy))))) (: ;) (S (VP (TO to) (VP (VB solidify) (SBAR (WHADVP (WRB when)) (S (VP (VBD cooled))))))))) (. .)))
It is this substance that causes the JELL-O &copy; to solidify when cooled.
(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))))))) (. .)))