Question: when were the canadian breeds ancestors imported to canada
[{'answer': 'the late 1600s', 'provenance': [{'wikipedia_id': '1403259', 'title': 'Canadian horse', 'start_paragraph_id': 1, 'start_character': 239, 'end_paragraph_id': 1, 'end_character': 253, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1403259', 'title': 'Canadian horse', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 926, 'bleu_score': 0.986969988197764, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6496871432606833582}, 'section': 'Section::::Abstract.'}]}]