Question: when did the north american fur trade start
[{'answer': '16th century', 'provenance': [{'wikipedia_id': '20850603', 'title': 'North American fur trade', 'start_paragraph_id': 1, 'start_character': 456, 'end_paragraph_id': 1, 'end_character': 468, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '20850603', 'title': 'North American fur trade', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 778, 'bleu_score': 0.9648601406493851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17682750313245081368}, 'section': 'Section::::Abstract.'}]}]