A small county consists of two small towns, Town 1 and Town 2. People in this county are voting on a ballot proposition. Each voter is either a Democrat (D) or a Republican (R), and will vote either yes or no. There were a total of 101 yes votes and 119 no votes. There were 110 Democrats and 110 Republicans who voted. Assume for this part that the vote was held by secret ballot. It is known who voted, and the political party of each person who voted, but it is not known how any individual voter voted. Explain why it is impossible (from the given information) to determine the probability that a random Democratic voter voted yes