Many researches have been conducted to involve AI into poem generation [Zhang and Lapata, 2014; Cheng et al., 2018] , creation of classical or pop music<cite> [Manzelli et al., 2018</cite>; Hadjeres et al., 2017] and automatic images generation [van den Oord et al., 2016; Yan et al., 2016; Xu et al., 2018] .