Review for NeurIPS paper: Meta-Learning Requires Meta-Augmentation

I did not understand the experimental setup for the sinusoid experiment in Section 5.2 (lines 238-241). The 10 disjoint intervals do not cover the whole domain [-5, 5]. What happens if x lies in (-4.5, -4) for example? Line 241: "there exists a continuous function that covers each piecewise component."; An illustration of this task (possibly in the Appendix) would make things clearer.