Question: what is the professor's name in captain underpants
[{'answer': 'Pippy P. Poopypants', 'provenance': [{'wikipedia_id': '2998990', 'title': 'Captain Underpants and the Perilous Plot of Professor Poopypants', 'start_paragraph_id': 3, 'start_character': 141, 'end_paragraph_id': 3, 'end_character': 160, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}]