Question: when did the very hungry caterpillar come out
[{'answer': '1969', 'provenance': [{'wikipedia_id': '1553175', 'title': 'The Very Hungry Caterpillar', 'start_paragraph_id': 1, 'start_character': 158, 'end_paragraph_id': 1, 'end_character': 162, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1553175', 'title': 'The Very Hungry Caterpillar', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 733, 'bleu_score': 0.9634320912002211, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3702973339915016897}, 'section': 'Section::::Abstract.'}]}]