sentence1_binary_parse: ( ( ( ( ( All but ) one ) group ) ( of ( these ( -LRB- ( ( the hagfishes ) -RRB- ) ) ) ) ) ( also ( ( ( convert ( their notochord ) ) ( into ( ( a ( vertebral ( ( column or ) backbone ) ) ) ( thus ( qualifying ( as vertebrates ) ) ) ) ) ) . ) ) )
sentence1_parse: (ROOT (S (NP (NP (QP (DT All) (CC but) (CD one)) (NN group)) (PP (IN of) (NP (NP (DT these)) (PRN (-LRB- -LRB-) (NP (DT the) (NN hagfishes)) (-RRB- -RRB-))))) (ADVP (RB also)) (VP (VB convert) (NP (PRP$ their) (NN notochord)) (PP (IN into) (NP (NP (DT a) (JJ vertebral) (NN column) (CC or) (NN backbone)) (VP (ADVP (RB thus)) (VBG qualifying) (PP (IN as) (NP (NNS vertebrates))))))) (. .)))
sentence1: All but one group of these (the hagfishes) also convert their notochord into a vertebral column or backbone thus qualifying as vertebrates.
sentence2_parse: (ROOT (S (NP (NNP Backbone)) (VP (VBZ is) (NP (NP (DT another) (NN name)) (PP (IN for) (NP (DT the) (JJ vertebral) (NN column))))) (. .)))
sentence2: Backbone is another name for the vertebral column.