Question: to whom does the narrator write in frankenstein
[{'answer': 'his sister', 'provenance': [{'wikipedia_id': '18580673', 'title': 'Frankenstein', 'start_paragraph_id': 6, 'start_character': 113, 'end_paragraph_id': 6, 'end_character': 123, 'bleu_score': 1.0, 'section': 'Section::::Summary.\n'}]}, {'provenance': [{'wikipedia_id': '18580673', 'title': 'Frankenstein', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 222, 'bleu_score': 0.950578622812921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2084772076097693379}, 'section': 'Section::::Summary.\n'}]}]