Question: when did the first scooby doo come out
[{'answer': '1969', 'provenance': [{'wikipedia_id': '37287', 'title': 'Scooby-Doo', 'start_paragraph_id': 1, 'start_character': 103, 'end_paragraph_id': 1, 'end_character': 107, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]