Furthermore, various prior analyses with particular semantic groups are available for comparison and replication (e.g., cases that involve paraphrasing or coreference (Chen et al., 2016;Weissenborn et al., 2017;Wadhwa et al., 2018)).
we analyze Bi-Directional Attention Flow (BiDAF) (Seo et al., 2016) on SQuAD v1.1 (Rajpurkar et al., 2016) in the rest of the paper.