Before revision:  and (2) to evaluate machine reading comprehension techniques using lexical-based approaches, neural-based approaches, and our proposed method. Finally, the results of our proposed model are analyzed by comparing it with the outcome of the lexical-based and neural-based approaches.
After revision:  and (2) to evaluate machine reading comprehension techniques using lexical-based MRC technique that utilizes semantic similarity measures and external knowledge sources to analyze questions and extract answers from the given text. We compare the performance of the proposed model with several lexical-based and neural-based approaches.