Question: who is the main character in a walk to remember
[{'answer': 'Landon Carter', 'provenance': [{'wikipedia_id': '19918431', 'title': 'A Walk to Remember (novel)', 'start_paragraph_id': 6, 'start_character': 38, 'end_paragraph_id': 6, 'end_character': 51, 'bleu_score': 1.0, 'section': 'Section::::Plot summary.\n'}]}]