Question: who are the democrats running for governor of tennessee
[{'answer': 'Mark E. Clayton'}, {'answer': 'Karl Dean', 'provenance': [{'wikipedia_id': '49235903', 'title': '2018 Tennessee gubernatorial election', 'start_paragraph_id': 1, 'start_character': 191, 'end_paragraph_id': 1, 'end_character': 200, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Craig Fitzhugh', 'provenance': [{'wikipedia_id': '49235903', 'title': '2018 Tennessee gubernatorial election', 'start_paragraph_id': 36, 'start_character': 12, 'end_paragraph_id': 36, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Democratic primary.:Candidates.:Eliminated in primary.\n'}]}]