( Chlorine ( ( is ( in ( ( group 17 ) ( of ( the ( periodic table ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Chlorine)) (VP (VBZ is) (PP (IN in) (NP (NP (NN group) (CD 17)) (PP (IN of) (NP (DT the) (JJ periodic) (NN table)))))) (. .)))
Chlorine is in group 17 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)))) (. .)))