( ( ( The substance ) ( of ( a ( Table Group ) ) ) ) ( ( is ( composed ( ( ( ( ( ( an ( optional ( Table ( Header element ) ) ) ) , ) ( ( ( one or ) more ) ( Table ( Body elements ) ) ) ) , ) and ) ( an ( optional ( Table ( Footer element ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN substance)) (PP (IN of) (NP (DT a) (NNP Table) (NNP Group)))) (VP (VBZ is) (VP (VBN composed) (NP (NP (DT an) (JJ optional) (NNP Table) (NNP Header) (NN element)) (, ,) (NP (QP (CD one) (CC or) (JJR more)) (NNP Table) (NNP Body) (NNS elements)) (, ,) (CC and) (NP (DT an) (JJ optional) (NNP Table) (NNP Footer) (NN element))))) (. .)))
The substance of a Table Group is composed an optional Table Header element, one or more Table Body elements, and an optional Table Footer element.
(ROOT (S (ADVP (DT All) (NN matter) (SBAR (IN in) (S (NP (DT the) (NN universe)) (VP (VBZ is) (UCP (VP (VBN composed) (PP (IN of) (NP (CD one)))) (CC or) (ADJP (RBR more) (JJ unique))))))) (NP (JJ pure) (NNS substances)) (VP (VBD called) (NP (NNS elements))) (. .)))