Question: when did chaucer begin writing the canterbury tales and when did he stop
[{'answer': 'between 1387 and 1400', 'provenance': [{'wikipedia_id': '7627', 'title': 'The Canterbury Tales', 'start_paragraph_id': 1, 'start_character': 131, 'end_paragraph_id': 1, 'end_character': 152, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7627', 'title': 'The Canterbury Tales', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 705, 'bleu_score': 0.9023035453653411, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15346296406175249071}, 'section': 'Section::::Abstract.'}]}]