Question: when did social security payments start being taxed
[{'answer': '1984', 'provenance': [{'wikipedia_id': '48728', 'title': 'Social Security (United States)', 'start_paragraph_id': 192, 'start_character': 93, 'end_paragraph_id': 192, 'end_character': 97, 'bleu_score': 1.0, 'section': 'Section::::Taxation.:Federal income taxation of benefits.\n'}]}, {'provenance': [{'wikipedia_id': '48728', 'title': 'Social Security (United States)', 'start_paragraph_id': 192, 'start_character': 0, 'end_paragraph_id': 192, 'end_character': 777, 'bleu_score': 0.9851290761715561, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5166624277165891502}, 'section': 'Section::::Taxation.:Federal income taxation of benefits.\n'}]}]