This is an excersise from Chung, Diaconis, Holmes
Let $F$ be a subset of $\mathbb{R}^2$, and suppose that if $x\in F$ then there exists a set $E_x$ (defined in the exercise) such that $E_x\cap F$ has null interior. (Null interior means set is unb https://kieshahindman456sx.wixsite.com/haysicuti/post/thronebreaker-the-witcher-tales-v-1-0-1-12-dlc-repack-hack-tool-link-download
ec5d62056f findear