Question: when was birth control legalized in the united states
[{'answer': '1995', 'provenance': [{'wikipedia_id': '33463304', 'title': 'Birth control in the United States', 'start_paragraph_id': 13, 'start_character': 678, 'end_paragraph_id': 13, 'end_character': 682, 'bleu_score': 1.0, 'section': 'Section::::History.:From World War II to 1960.\n'}]}, {'provenance': [{'wikipedia_id': '33463304', 'title': 'Birth control in the United States', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 838, 'bleu_score': 0.9618830282233141, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3002809494328877519}, 'section': 'Section::::History.:From World War II to 1960.\n'}]}]