Question: how many days are there in summer vacation in canada
[{'answer': 'six to eight weeks'}, {'provenance': [{'wikipedia_id': '2077393', 'title': 'Summer vacation', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 759, 'bleu_score': 0.607779273500187, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18197867193670372865}, 'section': 'Section::::Abstract.'}]}]