( It ( ( is ( ( a member ) ( of ( ( group IIIb ) ( of ( the ( periodic table ) ) ) ) ) ) ) ; ) )
(ROOT (S (NP (PRP It)) (VP (VBZ is) (NP (NP (DT a) (NN member)) (PP (IN of) (NP (NP (NN group) (NN IIIb)) (PP (IN of) (NP (DT the) (JJ periodic) (NN table))))))) (: ;)))
It is a member of group IIIb 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)))) (. .)))