( Some ( ( contain ( ( carbon and ) ( organic molecules ) ) ) . ) )
(ROOT (S (NP (DT Some)) (VP (VBP contain) (NP (NP (NN carbon)) (CC and) (NP (JJ organic) (NNS molecules)))) (. .)))
Some contain carbon and organic molecules.
(ROOT (S (NP (DT The) (NN element) (NN carbon)) (VP (VBZ is) (ADJP (JJ present) (PP (IN in) (NP (DT all) (JJ organic) (NNS molecules))))) (. .)))
The element carbon is present in all organic molecules.