Question: who are the main characters in the tell tale heart
[{'answer': 'an unnamed narrator', 'provenance': [{'wikipedia_id': '195979', 'title': 'The Tell-Tale Heart', 'start_paragraph_id': 1, 'start_character': 117, 'end_paragraph_id': 1, 'end_character': 136, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'The victim', 'provenance': [{'wikipedia_id': '195979', 'title': 'The Tell-Tale Heart', 'start_paragraph_id': 1, 'start_character': 264, 'end_paragraph_id': 1, 'end_character': 274, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '195979', 'title': 'The Tell-Tale Heart', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 675, 'bleu_score': 0.936207377410584, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10192644914047726175}, 'section': 'Section::::Abstract.'}]}]