Question: how long has thomas the train been on tv
[{'answer': '1984', 'provenance': [{'wikipedia_id': '19357739', 'title': 'Thomas the Tank Engine', 'start_paragraph_id': 17, 'start_character': 134, 'end_paragraph_id': 17, 'end_character': 138, 'bleu_score': 1.0, 'section': 'Section::::TV series.\n'}]}, {'provenance': [{'wikipedia_id': '19357739', 'title': 'Thomas the Tank Engine', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 569, 'bleu_score': 0.979896933041101, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8616726133879349310}, 'section': 'Section::::TV series.\n'}]}]