Before revision:  In human-to-human demonstrations, verbal instructions play a role in guiding an observer's visual attention . Inspired by the function of verbal instructions , we propose a verbal focus-of-attention (FoA) system (i.e., spatio-temporal filters) to guide a task-model encoder.
After revision:  In human-to-human demonstrations, verbal instructions play a role in guiding an observer's visual attention , we propose a verbal focus-of-attention (FoA) system (i.e., spatio-temporal filters) to guide a task-model encoder.