The dataset contains 6339 training samples, 815 validation samples and 785 test samples. Each sample represents a sentence and includes the following features: sentence ID ('sent_id'), list of tokens ('tokens'), list of lemmas ('lemmas'), list of UPOS tags ('upos_tags'), list of Multext-East tags ('xpos_tags), list of morphological features ('feats'), and list of IOB tags ('iob_tags'), which are encoded as class labels.