Question: what is malcolm's last name in malcolm in the middle
[{'answer': 'Wilkerson', 'provenance': [{'wikipedia_id': '17534878', 'title': 'List of Malcolm in the Middle characters', 'start_paragraph_id': 5, 'start_character': 31, 'end_paragraph_id': 5, 'end_character': 40, 'bleu_score': 1.0, 'section': 'Section::::Characters.\n'}]}, {'provenance': [{'wikipedia_id': '17534878', 'title': 'List of Malcolm in the Middle characters', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 766, 'bleu_score': 0.9846731957240711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17542235405773998830}, 'section': 'Section::::Characters.\n'}]}]