Question: who makes the curling stones for the winter olympics
[{'answer': 'Kays of Scotland', 'provenance': [{'wikipedia_id': '6644', 'title': 'Curling', 'start_paragraph_id': 29, 'start_character': 0, 'end_paragraph_id': 29, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Equipment.:Curling stone.\n'}]}, {'provenance': [{'wikipedia_id': '6644', 'title': 'Curling', 'start_paragraph_id': 29, 'start_character': 0, 'end_paragraph_id': 29, 'end_character': 711, 'bleu_score': 0.9832621206481431, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8727830669361613086}, 'section': 'Section::::Equipment.:Curling stone.\n'}]}]