Question: what is the first book of the diary of a wimpy kid series
[{'answer': 'Diary of a Wimpy Kid', 'provenance': [{'wikipedia_id': '18682466', 'title': 'Diary of a Wimpy Kid (book series)', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]