( ( Arranged ( by ( ( the groups ) ( of ( the ( Periodic Table ) ) ) ) ) ) . )
(ROOT (S (VP (VBN Arranged) (PP (IN by) (NP (NP (DT the) (NNS groups)) (PP (IN of) (NP (DT the) (NNP Periodic) (NNP Table)))))) (. .)))
Arranged by the groups of 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)))) (. .)))