Question: how are members of congress and the senate chosen for their office
[{'answer': 'elected by direct popular vote', 'provenance': [{'wikipedia_id': '223225', 'title': 'Member of Congress', 'start_paragraph_id': 4, 'start_character': 39, 'end_paragraph_id': 4, 'end_character': 69, 'bleu_score': 1.0, 'section': 'Section::::United States.\n'}]}, {'provenance': [{'wikipedia_id': '223225', 'title': 'Member of Congress', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 934, 'bleu_score': 0.9873009432531991, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7780137924463723669}, 'section': 'Section::::United States.\n'}]}]