( ( The ( periodic table ) ) ( ( is ( arranged ( in ( ( ( ( ( ( ( ( ( groups , ) or ) columns ) , ) and ) periods ) , ) or ) rows ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ periodic) (NN table)) (VP (VBZ is) (VP (VBN arranged) (PP (IN in) (NP (NP (NNS groups)) (, ,) (CC or) (NP (NNS columns)) (, ,) (CC and) (NP (NNS periods)) (, ,) (CC or) (NP (NNS rows)))))) (. .)))
The periodic table is arranged in groups, or columns, and periods, or rows.
(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)))) (. .)))