Question: who are the characters in rowan of rin
[{'answer': 'Rowan', 'provenance': [{'wikipedia_id': '2028687', 'title': 'Rowan of Rin (series)', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 5, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2028687', 'title': 'Rowan of Rin (series)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 164, 'bleu_score': 0.8179966936311641, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3251859944802811907}, 'section': 'Section::::Abstract.'}]}]