( ( If ( ( an molecule ) ( contains carbon ) ) ) ( , ( it ( ( is ( called organic ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (DT an) (NN molecule)) (VP (VBZ contains) (NP (NN carbon))))) (, ,) (NP (PRP it)) (VP (VBZ is) (VP (VBN called) (NP (JJ organic)))) (. .)))
If an molecule contains carbon, it is called organic.
(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.