( ( ( ( Enzyme ( ( An ( organic catalyst ) ) ( produced ( by ( living cells ) ) ) ) ) but ) ( capable ( of ( acting ( outside cells ) ) ) ) ) . )
(ROOT (S (S (ADVP (RB Enzyme)) (NP (DT An) (JJ organic) (NN catalyst)) (VP (VBD produced) (PP (IN by) (NP (VBG living) (NNS cells))))) (CC but) (S (ADJP (JJ capable) (PP (IN of) (S (VP (VBG acting) (NP (JJ outside) (NNS cells))))))) (. .)))
Enzyme An organic catalyst produced by living cells but capable of acting outside cells.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (NNS catalysts)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (VP (VBN found) (ADVP (RB inside)) (PP (IN of) (S (VP (VBG living) (NP (NNS things) (NNS enzymes))))))))))) (. .)))