Sitting before a group of 5-year-olds last week, Chicago Gov. Rod Blagojevich was hit with an unanticipated question. “Do you watch `The Simpsons’?” a child asked as the TV cameras rolled. The question seemed to come out of nowhere, because the governor was there to promote early childhood education and read the children the book “If You Give a Mouse a Cookie.” In order to ingratiate himself with the 20 or so youngsters sitting cross-legged on a mat at the St. Vincent De Paul Center on the North Side, Blagojevich had asked them if they watched a few kid-friendly television shows. Most had, but this child wanted to know how the governor felt about America’s first television family, Bart, Lisa, Maggie, Marge and, of course, Homer. Although it’s a cartoon, “The Simpsons” is the longest-running sitcom in history. “I don’t watch it,” he said. “Because there’s too much adult content.”