Question: who is the main character in the book theif
[{'answer': 'Liesel', 'provenance': [{'wikipedia_id': '8157637', 'title': 'The Book Thief', 'start_paragraph_id': 4, 'start_character': 19, 'end_paragraph_id': 4, 'end_character': 25, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '8157637', 'title': 'The Book Thief', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 466, 'bleu_score': 0.5356924353493631, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2484891696296355918}, 'section': 'Section::::Characters.:Liesel Meminger.\n'}]}]