Question: when did lead stop being used in paint uk
[{'answer': '1992', 'provenance': [{'wikipedia_id': '24176636', 'title': 'Lead-based paint in the United Kingdom', 'start_paragraph_id': 1, 'start_character': 90, 'end_paragraph_id': 1, 'end_character': 94, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '24176636', 'title': 'Lead-based paint in the United Kingdom', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 270, 'bleu_score': 0.959574895300321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13778157831460477809}, 'section': 'Section::::Abstract.'}]}]