Question: when do the dog days of summer start and end
[{'answer': '3 July to 15 August', 'provenance': [{'wikipedia_id': '682782', 'title': 'Dog days', 'start_paragraph_id': 15, 'start_character': 75, 'end_paragraph_id': 15, 'end_character': 94, 'bleu_score': 1.0, 'section': 'Section::::Span.\n'}]}, {'provenance': [{'wikipedia_id': '682782', 'title': 'Dog days', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 605, 'bleu_score': 0.941526131875647, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18312189049860962552}, 'section': 'Section::::Span.\n'}]}]