, Jyoti Katiyar, Prof. Deepali Khatri. “Enhancing Query Hardness Detection With Answer Extraction Using Ontology over the Relational Databases”. International Journal on Recent and Innovation Trends in Computing and Communication 3, no. 8 (August 31, 2015): 5136–5141. Accessed April 26, 2024. https://ijritcc.org/index.php/ijritcc/article/view/4805.