Task: Explanation
Input (English): Richard Jason Satawk "R. J." Harris (born November 16, 1972) is a United States Army National Guard warrant officer, politician, law student and former Air Traffic Controller. He was a candidate for the Libertarian Party's 2012 nomination for President of the United States. In 2010, he unsuccessfully challenged incumbent Tom Cole for the Republican Party nomination in the primary election for Oklahoma's 4th congressional district. He ran as an independent candidate for the same congressional seat in 2012. Question: Who was a candidate for the Libertarian Party's 2012 nomination for President of the United States, that unsuccessfully challenged during his tenure, the fourth-ranking Republican leader in the House? Answer: Richard Jason Satawk "R. J." Harris
Output (English):  In 2010, he unsuccessfully challenged incumbent Tom Cole for the Republican Party nomination in the primary election for Oklahomas 4th congressional district.