human 8 Question Answering 6 Research questions 6 Humans 5 child 5 female 5 Quizzes. Examination questions, etc. English as a Second Language Achievement Test 4 adolescent 4 male 4 Article 3 Deep learning 3 Female 3 Language 3 Natural language processing systems 3 Question answering 3 article 3 comparative study 3 controlled study 3 major clinical study 3 questionnaire 3 Adult 2 Biomedical question answering 2 Child 2 Grammar, syntax & morphology 2 Information systems 2 Learning systems 2 Male 2 Motivation 2 Named entity recognition 2 Natural Language Processing 2