Definition: In this task, you are given a context paragraph, a question based on that and corresponding answer of a question. Your task is to generate supporting fact/knowledge from context paragraph which helps in answering a given question.
Input: Ryan Keith Zinke (born November 1, 1961) is an American politician and businessman who is currently the 52nd United States Secretary of the Interior, serving in the Trump administration. Zinke served as the U.S. representative for Montana's at-large congressional district from 2015 until 2017. From 2009 to 2013, he served as a member of the Montana Senate, representing the 2nd district. Question: How long did Greg Gianforte's predecessor serve as U.S. representative for Montana's at-large congressional district? Answer: 2015 until 2017
Output:
Zinke served as the U.S. representative for Montanas atlarge congressional district from 2015 until 2017.