Question: when did thomas the tank engine became animated
[{'answer': 'Series 13', 'provenance': [{'wikipedia_id': '231475', 'title': 'Thomas & Friends', 'start_paragraph_id': 33, 'start_character': 299, 'end_paragraph_id': 33, 'end_character': 308, 'bleu_score': 1.0, 'section': 'Section::::History.:"Thomas and Friends".\n'}]}, {'provenance': [{'wikipedia_id': '231475', 'title': 'Thomas & Friends', 'start_paragraph_id': 33, 'start_character': 0, 'end_paragraph_id': 33, 'end_character': 438, 'bleu_score': 0.9383908431221111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 482983868532781844}, 'section': 'Section::::History.:"Thomas and Friends".\n'}]}]