( ( ( Each molecule ) ( of ozone ) ) ( ( consists ( of ( ( ( three , ) ( rather than ) ) ( ( two , ) ( atoms ( of oxygen ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT Each) (NN molecule)) (PP (IN of) (NP (NN ozone)))) (VP (VBZ consists) (PP (IN of) (NP (NP (CD three)) (, ,) (CONJP (RB rather) (IN than)) (NP (NP (CD two)) (, ,) (NP (NP (NNS atoms)) (PP (IN of) (NP (NN oxygen)))))))) (. .)))
Each molecule of ozone consists of three, rather than two, atoms of oxygen.
(ROOT (S (NP (CD Three) (NN oxygen) (NNS ions)) (VP (VBP make) (PRT (RP up)) (NP (DT an) (NN ozone) (NN molecule))) (. .)))