Question: how many books has dr seuss written and illustrated
[{'answer': 'over 60', 'provenance': [{'wikipedia_id': '31521053', 'title': 'Dr. Seuss bibliography', 'start_paragraph_id': 1, 'start_character': 59, 'end_paragraph_id': 1, 'end_character': 66, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '31521053', 'title': 'Dr. Seuss bibliography', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1098, 'bleu_score': 0.9896637358043451, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10564196552211463144}, 'section': 'Section::::Abstract.'}]}]