Question: when was the center for disease control created
[{'answer': 'July 1 , 1946', 'provenance': [{'wikipedia_id': '6811', 'title': 'Centers for Disease Control and Prevention', 'start_paragraph_id': 4, 'start_character': 44, 'end_paragraph_id': 4, 'end_character': 57, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '6811', 'title': 'Centers for Disease Control and Prevention', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 192, 'bleu_score': 0.9383861709333501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12500025111987634327}, 'section': 'Section::::History.\n'}]}]