Question: what is the age limit to buy alcohol
[{'answer': '21', 'provenance': [{'wikipedia_id': '1015583', 'title': 'Legal drinking age', 'start_paragraph_id': 5, 'start_character': 469, 'end_paragraph_id': 5, 'end_character': 471, 'bleu_score': 1.0, 'section': 'Section::::Africa.\n'}]}, {'provenance': [{'wikipedia_id': '1015583', 'title': 'Legal drinking age', 'start_paragraph_id': 7, 'start_character': 4, 'end_paragraph_id': 7, 'end_character': 916, 'bleu_score': 0.9493613902859581, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4341483267336429741}, 'section': 'Section::::Americas.\n'}]}]