, J. K. P. D. K. Enhancing Query hardness detection with answer extraction using Ontology over the relational databases. International Journal on Recent and Innovation Trends in Computing and Communication, [S. l.], v. 3, n. 8, p. 5136–5141, 2015. DOI: 10.17762/ijritcc.v3i8.4805. Disponível em: https://ijritcc.org/index.php/ijritcc/article/view/4805. Acesso em: 18 apr. 2024.