Question: who is jojo in horton hears a who
[{'answer': 'Jesse McCartney', 'provenance': [{'wikipedia_id': '6002183', 'title': 'Horton Hears a Who! (film)', 'start_paragraph_id': 21, 'start_character': 12, 'end_paragraph_id': 21, 'end_character': 27, 'bleu_score': 1.0, 'section': 'Section::::Voice cast.\n'}]}, {'answer': "Jesse McCartney as JoJo , the Mayor 's son"}, {'provenance': [{'wikipedia_id': '6002183', 'title': 'Horton Hears a Who! (film)', 'section': 'Section::::Voice cast.\n', 'start_paragraph_id': 21, 'end_paragraph_id': 21, 'meta': {'evidence_span': ["Jesse McCartney as JoJo McDodd, Mayor McDodd's quiet son", "BULLET::::- Jesse McCartney as JoJo McDodd, Mayor McDodd's quiet son.", "Jesse McCartney as JoJo McDodd, Mayor McDodd's quiet son."]}}]}]