( ( group ( ( a ( vertical column ) ) ( in ( the ( Periodic Table ) ) ) ) ) . )
(ROOT (NP (NP (NN group)) (NP (NP (DT a) (JJ vertical) (NN column)) (PP (IN in) (NP (DT the) (NNP Periodic) (NNP Table)))) (. .)))
group a vertical column in the Periodic Table.
(ROOT (S (NP (NP (NNP Group) (CD 13)) (PP (IN of) (NP (DT the) (JJ periodic) (NN table)))) (VP (VBZ is) (ADVP (RB also)) (VP (VBN called) (NP (DT the) (DT the) (NN boron) (NN group)))) (. .)))