Question: when did the mongols take over the silk road
[{'answer': 'around 1207', 'provenance': [{'wikipedia_id': '54253', 'title': 'Silk Road', 'start_paragraph_id': 58, 'start_character': 57, 'end_paragraph_id': 58, 'end_character': 68, 'bleu_score': 1.0, 'section': 'Section::::Evolution.:Mongol empire (13-14th centuries).\n'}]}, {'provenance': [{'wikipedia_id': '54253', 'title': 'Silk Road', 'start_paragraph_id': 58, 'start_character': 0, 'end_paragraph_id': 58, 'end_character': 388, 'bleu_score': 0.923768200931469, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17718762400135759698}, 'section': 'Section::::Evolution.:Mongol empire (13-14th centuries).\n'}]}]