Question: when were state pensions introduced in the uk
[{'answer': 'early 1990s', 'provenance': [{'wikipedia_id': '3069637', 'title': 'Pensions in the United Kingdom', 'start_paragraph_id': 20, 'start_character': 4, 'end_paragraph_id': 20, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '3069637', 'title': 'Pensions in the United Kingdom', 'start_paragraph_id': 20, 'start_character': 0, 'end_paragraph_id': 20, 'end_character': 350, 'bleu_score': 0.9611463610973231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13246591071056626568}, 'section': 'Section::::History.\n'}]}]