Question: who was elected senator of illinois in 1858
[{'answer': 'Stephen A. Douglas', 'provenance': [{'wikipedia_id': '447485', 'title': 'Lincoln–Douglas debates', 'start_paragraph_id': 38, 'start_character': 235, 'end_paragraph_id': 38, 'end_character': 253, 'bleu_score': 1.0, 'section': 'Section::::Results.\n'}]}, {'provenance': [{'wikipedia_id': '447485', 'title': 'Lincoln–Douglas debates', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17739728235797545359}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '447485', 'title': 'Lincoln–Douglas debates', 'start_paragraph_id': 38, 'start_character': 0, 'end_paragraph_id': 38, 'end_character': 760, 'bleu_score': 0.955333150841943, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17739728235797545359}, 'section': 'Section::::Results.\n'}]}, {'provenance': [{'wikipedia_id': '447485', 'title': 'LincolnDouglas debates', 'section': 'Section::::Results.\n', 'start_paragraph_id': 38, 'end_paragraph_id': 38, 'meta': {'evidence_span': ["Stephen A. Douglas was reelected by the legislature, 5446, even though Lincoln's Republicans won the popular vote with a percentage of 50.6%, or by 3,402 votes.", "the Democrats won 40 seats in the state house of Representatives, and the Republicans won 35. In the state senate, Republicans held 11 seats, and Democrats held 14. Stephen A. Douglas was reelected by the legislature, 5446, even though Lincoln's Republicans won the popular vote with a percentage of 50.6%, or by 3,402 votes."]}}]}]