Question: when was the birth control pill made available
[{'answer': 'in the 1960s', 'provenance': [{'wikipedia_id': '18978770', 'title': 'Birth control', 'start_paragraph_id': 72, 'start_character': 607, 'end_paragraph_id': 72, 'end_character': 619, 'bleu_score': 1.0, 'section': 'Section::::History.:Modern methods.\n'}]}, {'provenance': [{'wikipedia_id': '18978770', 'title': 'Birth control', 'start_paragraph_id': 72, 'start_character': 0, 'end_paragraph_id': 72, 'end_character': 835, 'bleu_score': 0.9845548242372031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8342530020480945757}, 'section': 'Section::::History.:Modern methods.\n'}]}]