Question: where was the royal mint before it moved to wales
[{'answer': 'London', 'provenance': [{'wikipedia_id': '274396', 'title': 'Royal Mint', 'start_paragraph_id': 1, 'start_character': 779, 'end_paragraph_id': 1, 'end_character': 785, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '274396', 'title': 'Royal Mint', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1180, 'bleu_score': 0.9639829783986981, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8521778194065506102}, 'section': 'Section::::Abstract.'}]}]