( Ozone ( ( is ( ( a ( ( highly reactive ) molecule ) ) ( that ( contains ( three ( oxygen atoms ) ) ) ) ) ) . ) )
(ROOT (S (NP (NN Ozone)) (VP (VBZ is) (NP (NP (DT a) (ADJP (RB highly) (JJ reactive)) (NN molecule)) (SBAR (WHNP (WDT that)) (S (VP (VBZ contains) (NP (CD three) (NN oxygen) (NNS atoms))))))) (. .)))
Ozone is a highly reactive molecule that contains three oxygen atoms.
(ROOT (S (NP (CD Three) (NN oxygen) (NNS ions)) (VP (VBP make) (PRT (RP up)) (NP (DT an) (NN ozone) (NN molecule))) (. .)))