Question: when did island of the blue dolphins take place
[{'answer': 'during the 19th century', 'provenance': [{'wikipedia_id': '876994', 'title': 'Island of the Blue Dolphins', 'start_paragraph_id': 1, 'start_character': 328, 'end_paragraph_id': 1, 'end_character': 351, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '876994', 'title': 'Island of the Blue Dolphins', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 351, 'bleu_score': 0.7379986958794821, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 969884494532512345}, 'section': 'Section::::Abstract.'}]}]