( Air ( ( is ( composed ( of ( ( air ( ( molecules and ) atoms ) ) ( such ( as ( nitrogen ( molecules ( and ( oxygen atoms ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Air)) (VP (VBZ is) (VP (VBN composed) (PP (IN of) (NP (NP (NN air) (NNS molecules) (CC and) (NNS atoms)) (PP (JJ such) (IN as) (NP (NN nitrogen) (NNS molecules) (CC and) (NN oxygen) (NNS atoms))))))) (. .)))
Air is composed of air molecules and atoms such as nitrogen molecules and oxygen atoms.
(ROOT (S (NP (NNP Air)) (VP (VBZ is) (VP (VBN made) (PP (IN of) (NP (NNS atoms))))) (. .)))