( ( ( The ( systematic arrangement ) ) ( of ( elements ( into ( ( groups and ) periods ) ) ) ) ) ( ( is ( called ( periodic table ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ systematic) (NN arrangement)) (PP (IN of) (NP (NP (NNS elements)) (PP (IN into) (NP (NNS groups) (CC and) (NNS periods)))))) (VP (VBZ is) (VP (VBN called) (NP (JJ periodic) (NN table)))) (. .)))
The systematic arrangement of elements into groups and periods is called 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)))) (. .)))