Given the task definition and input, reply with output. In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.

The Secretary of State is a senior official of the federal government of the United States of America, and as head of the U.S. Department of State, is principally concerned with foreign policy and is considered to be the U.S. government's equivalent of a Minister for Foreign Affairs.

what is the role of us secretary of state