WASHINGTON (Reuters) – President Barack Obama likes burgers, hot dogs and such, but when it came time to answer a kid journalist's question about his favorite food, broccoli was the first word that sprang from his lips. This revelation came on Tuesday at a White House event that recognized children who won a healthy recipe contest, as part of first lady Michelle Obama's anti-obesity campaign. Having fun with the children, Obama agreed to take two questions from the journalists among them. The first asked what was Obama's favorite food. …