An eastern Iowa woman won a $500,000 prize Friday in a joint drawing by the Kansas and Iowa lotteries. Kim Hertel of Washington was selected as the top-prize winner in the “Midwest Millions” drawing conducted by lottery officials in Topeka, Kansas. Five winners of $10,000 prizes also were selected in the drawing, including Diane Robinson of Indianola. Hertel thought it was a joke at first when the lottery contacted her. Hertel, a registered nurse who works at the Veterans Administration Medical Center in Iowa City, said she and her husband both sent in tickets for the Midwest Millions drawing. She said she plans on sharing the money with her husband.