Seven horses (A, B, C, D, E, F, and G) are running in a race. According to the oddsmakers, A has a "one in five" probability of winning [i.e. 1 Pr(A) = 1/5] B has a "three in ten" probability of winning, and C has a "one in ten" probability of winning. The remaining four horses all have the same probability of winning. Find the probability assignment for the probability space.