sentence1_binary_parse: ( ( These materials ) ( ( can ( be ( divided ( into ( seven ( main groups ) ) ) ) ) ) . ) )
sentence1_parse: (ROOT (S (NP (DT These) (NNS materials)) (VP (MD can) (VP (VB be) (VP (VBN divided) (PP (IN into) (NP (CD seven) (JJ main) (NNS groups)))))) (. .)))
sentence1: These materials can be divided into seven main groups.
sentence2_parse: (ROOT (S (NP (NNS Mollusks)) (VP (MD can) (VP (VB be) (VP (VBN divided) (PP (IN into) (NP (CD seven) (NNS classes)))))) (. .)))
sentence2: Mollusks can be divided into seven classes.