( ( OZONE Ozone ) ( ( is ( ( a molecule ) ( composed ( of ( three ( oxygen atoms ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP OZONE) (NNP Ozone)) (VP (VBZ is) (NP (NP (DT a) (NN molecule)) (VP (VBN composed) (PP (IN of) (NP (CD three) (NN oxygen) (NNS atoms)))))) (. .)))
OZONE Ozone is a molecule composed of 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))) (. .)))