Who was the first U.S. president to be impeached twice?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q11696', 'id': 0, 'label': 'President of the United States'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q35041', 'id': 1, 'label': 'William McKinley'}], 'links': [{'name_': 'P39', 'source': 1, 'target': 0, 'label': 'position held'}]}
William McKinley was the President of the United States.
William McKinley was the President of the United States .
Who was the first U.S. president to be impeached twice?</s> [unused1]William McKinley                [unused2] was the President of the United States.
Who was the first U.S. president to be impeached twice?</s>William McKinley was the President of the United States.
Who was the first U.S. president to be impeached twice?</s> [unused1]William McKinley                [unused2] was the President of the United States .
Who was the first U.S. president to be impeached twice?</s>William McKinley was the President of the United States .
Who was the first U.S. president to be impeached twice?</s>President of the United States,0,President of the United States,President of the United States,0,[unused1]William McKinley[unused2],[unused1]William McKinley[unused2],position held,President of the United States,[unused1]William McKinley[unused2],0,[unused1]William McKinley[unused2]
Who was the first U.S. president to be impeached twice?</s>President of the United States,0,President of the United States,President of the United States,0,William McKinley,William McKinley,position held,President of the United States,William McKinley,0,William McKinley