Question: when did republicans take control of the senate
[{'answer': 'January 2015', 'provenance': [{'wikipedia_id': '21293206', 'title': '2014 United States Senate elections', 'start_paragraph_id': 2, 'start_character': 92, 'end_paragraph_id': 2, 'end_character': 104, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '21293206', 'title': '2014 United States Senate elections', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 359, 'bleu_score': 0.9663744727315161, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6425497730775724132}, 'section': 'Section::::Abstract.'}]}]