For all the models, we conduct coreference resolution to determine speaker mentions of s Q based on simple heuristics.
we map three most common speaker abbreviations (i.e., ''M''; ''W'' and ''F'') that appear in dialogues to their eight most common corresponding mentions (i.e., ''man,'' ''boy,'' ''he,'' and ''his''; ''woman,'' ''girl,'' ''she,'' and ''her'') in questions.