Question: what is jojo's last name from dance moms
[{'answer': 'Siwa', 'provenance': [{'wikipedia_id': '50561266', 'title': 'JoJo Siwa', 'start_paragraph_id': 0, 'start_character': 5, 'end_paragraph_id': 0, 'end_character': 9, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '50561266', 'title': 'JoJo Siwa', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 330, 'bleu_score': 0.9047854270824001, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11023860878222985148}, 'section': 'Section::::Abstract.'}]}]