( ( Synthetic ( ( vitamins and ) minerals ) ) ( ( are allowed ) . ) )
(ROOT (S (NP (JJ Synthetic) (NNS vitamins) (CC and) (NNS minerals)) (VP (VBP are) (VP (VBN allowed))) (. .)))
Synthetic vitamins and minerals are allowed.
(ROOT (S (NP (DT A) (JJ synthetic) (NN diamond)) (VP (VBZ is) (RB not) (VP (VBN considered) (NP (DT a) (NN mineral)) (SBAR (IN because) (S (NP (NNS minerals)) (VP (MD must) (VP (VB be) (VP (VBN created) (ADVP (RB naturally))))))))) (. .)))