Question: what is the largest provincial park in ontario
[{'answer': 'Polar Bear', 'provenance': [{'wikipedia_id': '2154113', 'title': 'Ontario Parks', 'start_paragraph_id': 13, 'start_character': 7, 'end_paragraph_id': 13, 'end_character': 17, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '2154113', 'title': 'Ontario Parks', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 92, 'bleu_score': 0.861173529963367, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10920136958888613064}, 'section': 'Section::::History.\n'}]}]