In the figure, line $p$ is parallel to line $q$, and line $r$ is a transversal. An angle in the upper-left position at the intersection of line $p$ and line $r$ measures $130^{\circ }$. An angle in the lower-right position at the intersection of line $q$ and line $r$ is labeled $x^{\circ }$. What is the value of $x$?