title: Term of office
context: In the United States, the president of the United States is elected indirectly through the United States Electoral College to a four-year term, with a term limit of two terms (totaling eight years) or a maximum of ten years if the president acted as president for two years or less in a term where another was elected as president, imposed by the Twenty-second Amendment to the United States Constitution, ratified in 1951.
question: how long does the president of the USA serve?
answers: four-year term, with a term limit of two terms (totaling eight years) or a maximum of ten years if the president acted as president for two years or less in a term where another was elected as president