“…Several studies have been carried out on how to make better the quality of the answers provided by QA system, focusing on textual entailment, question type analysis, answer ranking by the crowd workers and domain experts and personal and community features (past history) of the answerer to determine the quality of the answers (Ríos-Gaona et al, 2012;Su et al, 2007;Ishikawa et al, 2011;Ojokoh & Ayokunle, 2012;Anderson et al, 2012;Schofield & Thielscher, 2019).…”