Leonel F de Alencar author Philipp B Costa author Mardonio J C França author Alexander Ewart author Katiuscia M Andrade author Rossana M C Andrade author 2015-11 text Claudia Freitas editor Alexandre Rademaker editor Sociedade Brasileira de Computação Natal, Brazil conference publication de-alencar-etal-2015-jclext https://aclanthology.org/W15-5601/ 2015-11 15 19