We also use a development set to tune the hyper-parameters of the model. This corpus consists of 9476 manually annotated sentences and independent clauses from 1047 user comments extracted from the Regulation Room website. 2<cite> Park and Cardie (2014)</cite> and Park et al. (2015) used this corpus for examining each proposition with respect to its verifiability to determine the desirable types of support for the analysis of arguments.