sentence1: on the standard parseval metric matches that of the ( cite-p-16-3-5 ) parser on which it is based , despite the data fragmentation caused by the greatly enriched space of possible node labels .
sentence2: the accuracy of the first-stage parser on the standard parseval metric matches that of the ( cite-p-16-3-5 ) parser on which it is based , despite the data fragmentation caused by the greatly enriched space of possible node labels .