( ( OZONE ( 4.44 Ozone ) ) ( ( is ( ( a molecule ) ( of ( three ( oxygen atoms ) ) ) ) ) . ) )
(ROOT (S (NP (JJ OZONE) (CD 4.44) (NN Ozone)) (VP (VBZ is) (NP (NP (DT a) (NN molecule)) (PP (IN of) (NP (CD three) (NN oxygen) (NNS atoms))))) (. .)))
OZONE 4.44 Ozone is a molecule 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))) (. .)))