For this problem, our universe U consists of the vertices V of a graph G (no loops or multiple edges), and the relation R (u, 12) means that there is an edge between 11 and v; in other words 1201, v) is equivalent to (u, v) E E (G). a) _ What does the formula (Vu) (Eli?) [R (u, 12)] express about G? Find a concise answer. b) ' ' What does the formula (Elu)(Vv)[ u i v > R04, 19)] express about G? Find a concise