Question: total number of episodes of phineas and ferb
[{'answer': '133 episodes', 'provenance': [{'wikipedia_id': '12819036', 'title': 'List of Phineas and Ferb episodes', 'start_paragraph_id': 1, 'start_character': 191, 'end_paragraph_id': 1, 'end_character': 203, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '12819036', 'title': 'List of Phineas and Ferb episodes', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 203, 'bleu_score': 0.9466178497997021, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8519878987805161562}, 'section': 'Section::::Abstract.'}]}]