Note that the input to the CNNs is a sequence of words in X trg , which are concatenated with special character " ," such as "sonic boom." Following <cite>Noraset et al. (2017)</cite>, we set the CNN kernels of length 2-6 and size 10, 30, 40, 40, 40 respectively with a stride of 1 to obtain a 160-dimensional vector c trg .